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Minaret, an Earthly Element Facing the Sky
Minarets are actually a kind of different element, in comparison to the other architectural products in Iranian civilization from the viewpoint of design, construction, durability, stability, and function. This is why, in this passage, we will have a quick review of them. Minarets were used as observation posts or watch towers and guided desert caravans towards the cities both in pre-Islamic as well as the post-Islamic periods. Nowadays they stand high and proud in the cities and their outskirts.

They are of great significance both architecturally, and with their brick ornamentations, aesthetically. The name minaret comes from the word "Nar” meaning fire and originally during the Zoroastrian time was used for keeping that everlasting and sacred fire. Later in the Islamic period, they were used as a point from which to call the faithful to prayer. Cheheldokhtaran, Sareban and Ali Mosque Minarets are amongst those that will be briefly described.
Etymologically, the word "Minaret' is derived from "Nar' which means Fire' and a minaret stands for an enclosed area for making fire. Functionally, it can be divided into two types: The initial types are city minarets used in both pre-Islamic and post-Islamic periods as watchtowers, but primarily they were suitable high-rise points, allocated for making the holy fire of the Zoroaster on their tops. The fire, on the tower top, could also guide the caravans from far distances since the minaret was a relatively tall structure. Besides, in the old Islamic texture of Esfahan which had a cellular arrangement because of the sinuous and narrow routes that were subordinate upon the topography of the region to let a suitable gradient for running water in the open canals (Madi), the minarets could guide wayfarers to the location of the mosques through the alleys in the winding residential areas.
After the advent of Islam, the religious fire (Zoroastrian) kept cool on the top of minarets, but still, they preserved their functions as watchtowers and a new function was given to them, as a suitable site for the chanter (Muezzin) to invite people towards the mosques for prayer. Therefore, this function can be fallen into the second category.
Owing to its high elevation, it was preferable to choose a blind Muezzin to prevent his unconscious glance at the gardens of residential houses where the ladies might be without Islamic dress (covering). When the number of mosques increased gradually, and the access to blind Muezzins became difficult, so to find a solution to the problem, a new architectural element called; "Goldasteh' was initiated as pyramid structure with a square base located on the top roof of mosques. Although they had higher quality of sound conduction in a limited area, they had less scope of vision and lower elevation.
The minarets were built outside the cities, called; "Miel' (guide post). They functioned as 'lighthouses of the desert for flocks of travelers moving together as a caravan, who because of the heat of the sun, preferred to move during the nights. So, the minarets with a burning fire on top, just like pharos (beacon) could show the way to the ship of the desert, that is, tall patient camel. In this region, the majority of minarets set up with baked bricks 20 centimeters by 20 centimeters or 40 centimeters by 40 centimeters.
Amongst the existing historical minarets of Iran, the tallest one flanking the gate of the congregational mosque of Yazd (twin) with 57 meters height, in comparison to Sareban in Esfahan, is only 3 meters taller. According to sources in the historical Deylamites Jorjir Mosque, the 11th-century mosque in Esfahan, at present is a 17th century Hakim mosque, had a minaret with 100 meters height destroyed either by the Mongols or Teymour after the conquest of the city. This hints to us about another function of the city minarets as the watch and signal towers for the security of the city against any invasion by enemies.
In Esfahan, a minaret called; Ali in the vicinity of the Atiq (Antique) Jam-mosque', is 52 meters high and has 164 spiral steps from the base to the top (two of the steps have a double-height) and weighs about 1,000 tons. With respect to its 5-meter diameter and considerable weight, the natural ground of the area is not able to tolerate such a load in such a limited area regarding the allowable stress of the natural ground. Thus, according to computations, it must have at least an incomplete conical foundation with the following dimensions (considering the minimum allowable stress of the regional soil): a circular base 11meters in diameter, a thickness of 3.5 meters and a circular top of 6 meters in diameter made up of blocks of stone, clay and lime powder. In general, by adding this minimum foundation weight as the substructure to the superstructure (minaret), it gives a minimum total weight of 1700 tons. Hence, this is an important technical point that has been almost neglected by visitors.
In practice, to construct a foundation for a minaret, it was common to carry needed volume of baked bricks to the site, and use the broken pieces in the combination with clay and use lime as the stable mortar to fill up the volume of indication. This procedure can be observed at the site of Ziar Minaret. Although minarets seem as slender and unstable structural elements, in practice they are very durable buildings. For example: Ali Minaret in Esfahan, is more than 9 centuries old, which built simultaneously with the mosque in the 11th century, but 4 centuries later the mosque destroyed and the existing mosque dates back to the 15th century. The main reasons for this longevity can be listed as follows:
1) Due to the existence of a limited area on the top of a minaret in comparison to its magnitude, it is less vulnerable to rainfall. 2) The cylindrical shape of a minaret is an ideal aerodynamic resistant form against wind force. 3) The innate resistance of a minaret against cycles of earthquake loads is achieved by dissipating the frequencies in each turn of loading through the conduction of waves from the base to the top to increase the period of each cycle. In conclusion, the frequencies are reduced by the shaft of minarets, and a considerable reduction in the number of loading and unloading causes less destruction to the structure.
Nowadays, in the theories of structures, it has been proven to confront earthquake loads in the areas with a high probability of occurrence of the earthquake, it is better to design high-rise buildings with sufficient reinforcements based on analysis and regional specifications. In building the minarets, also, the designers made the effort to locate the center of gravity in the lowest possible level of the framework in a conical shape to increase their stability, and to prevent the center of gravity from shifting out of the framework of stability against collapse.
A classic minaret can be physically divided into five parts, respectively from the base to the top, foundation (invisible), shaft, neck, saucer and the crown of the minaret with a maximum elevation on the top.

Chehel Dokhtaran , the most Prominent Minaret of Isfahan

- Chehel Dokhtaran, the most Prominent Minaret of Isfahan
This minaret is also located in Joubareh (the Jewish quarter) and has a 40 meters height. The etymology of Chehel Doktaran (40 virgins) is obscure, although it was also famed by the name Garland, which referred to J. L. Garland, a Christian missionary of the 19th century who lived near the minaret. It has some Kufic writings on the shaft with baked bricks in an inlaid style. Fortunately, the name of the endower can be read along with the inscribed date 1107 A.D. on six lines in the Arabic language. From this point, it is the only minaret with; a certain date endower's name and his intention that still exists on its shaft, over a panel 5 meters higher than its base which states:
"This minaret, as one of the endowments of the chief-commander Abi-ol-Fath-e-Nahuji, was built for winning God's favor and for the satisfaction of the high
est ranking for a donation of its endless reward. May God accept his good deed and help him in its completion."

Sareban Minaret , the Most Beautiful and the Tallest Minaret of Esfahan

- Sareban Minaret, the Most Beautiful and the Tallest Minaret of Esfahan
Sareban Minaret is one of the most beautiful minarets of the Seljuk Era, and the tallest one in Esfahan, which is located in Joubareh (the Jewish quarter) 54 meters high and 4.2 meters in diameter. The minaret enjoys seven different parts on its shaft, from the base to the top as follow the first part is with a simple brickwork, the second and the third parts are also with excellent decorative brickwork, the fourth part, the neck (or the first crown) has a combination of bricks and turquoise mosaics on pendentives with inscriptions, the fifth part with brick decoration, the sixth is the saucer (the second crown) and the seventh is the main crown on the top. Professor Pope (the American orientalist) recorded the minaret as being from the 11th century.
Since the minaret is the tallest one in the city, some of the local people regard it as a criterion for the height of the human body, and that is why they compare tall people with this minaret to make fun of or to despise them. At present, this minaret diverted about 8 degrees from the orthogonal direction towards the southeast, which may be related to the probable disorders in the texture of its foundation or to the frequent changes in the level of the aquifer.

Ali Mosque Minaret, a High Minaret of Esfahan With the Best Proportions And Conditions

- Ali Mosque Minaret, a High Minaret of Esfahan With the Best Proportions And Conditions
The etymology relates to its vicinity to Ali Mosque from the Seljuk era (11th century) which was built 52 meters high, contemporary with the primary mosque (the present mosque by the same name belongs to the Safavid time). The bricked inscriptions on its facade consists of five religious inscriptions with the Kufic style and have been repeated with geometric figures. The minaret has 164 steps with an average height of 31centimeters (two of them have a double-height). On the shaft of the minaret, there are some rectangular openings (apertures) with dimensions of 40 centimeters by 10 centimeters, facing Kiblah for lighting and ventilation. From the base to the top, it is 52 meters high. The diameter of its base is 5 meters and at the level of the saucer and crown it is 4 meters and 2.5 meters, respectively.

- Gar Single Minaret with two Spiral Stairways
About 21.5 kilometers east of Esfahan from Danzdah-e-Khordad' Ave. on the left of the road. The remnants of an abandoned dusty treasure mosque and a minaret of the Seljuk period come into view. The dome chamber has a net dimension of 8 meters by 8 meters in cubic form (the same height). Unfortunately, the dome collapsed and the majority of its supporting structure destroyed, but still more than 50% of its elegant prayer niche with stuccowork survive; 3.5 meters wide and 5.5 meters high. Across from it on the upper part of the plasterwork, the builder's name and its date, 1263 A.D., recorded that indicates, it was built about 50 years before Oljeitu Mehrab in ‘Atiq Jam-e-Mosque' of Esfahan, namely, it is the oldest remaining plaster stuccowork in the region of Esfahan. It seems that the inscribed parts annexed later to the mosque. Its Mehrab, like other Mehrabs of that era, has a tolerance of 17 degrees from the precise Mecca direction. On the north of the mosque, the surviving of a minaret with a square base of stone blocks stands out. It is about 18.5 meters high and 5.6 meters wide, estimated to have been primarily about 50 meters high. On the top of its square base, there is an octagon supporting the circular shaft of the minaret. The striking characteristic of this single minaret is two spiral stairways designed and built in an amazing elegant form. Also, there are two orthogonal separate apertures on its shaft, in each direction for one of the stairways. On the shaft of the minaret, the name of its endower inscribed, “Sayed-ol-Roasa', with a date of 1122 A.D., signifying that Barisan and Chehel Dokhtaran minarets were erected before this minaret.

- Ziar, a Minaret of the Seljuk Era with a Shaft of Five Different Visible Sections
This Minaret is located about 33 kilometers east of Esfahan romanizaleKhordad' Ave, on the left of the road, about 500 meters ahead. Amongst its significant points, is its regular octagonal base (2 meters each side and 5.5 meters high). Its successive sections from bottom upwards are circular, a gradual decrease in diameter (conical) and two other sudden gradual transitions before the top level, where it has a square section large enough for a Muezzin (chanter) to call for prayer. On the shaft of the minaret, at three different levels, exquisite blue mosaics on its brick background employed. Its lower part is extremely attractive and carries the 33rd verse of the Fussilat Chapter (the Distinguished) from the holy Qur'an.
The minaret is totally about 47 meters high settled, somewhat unequally, on the level of the two variable circular sections of its upper part, but still seems stable. Its foundation can be observed vividly at the site because it is situated in the middle of a farm. The diameter of its foundation is 12.3 meters, about 8 meters more than the diameter of the minaret base which is measured at 4.3 meters. Its foundation is a conglomeration of broken pieces of baked bricks, suggestive of an assumption that all the required bricks had been piled up at the site and then the rubble used for the substructure.
On the shaft of the minaret, some rectangular apertures with 20 degree tolerance from the Kiblah direction function as the natural lighting systems. On the western part of it, at the elevation of six meters, the surviving of its identity tablet (2 meters by 2 meters), completely defaced refers to its approximate date of construction that ranges between 1155-1269 A.D.

-  Rahravan Minaret The Closest Single Minaret outside Esfahan
Passing through Jey Ave. towards Khorasgan. 8 kilometer norasgan, 8 kilometers east of Isfahan from Ahmad Abad Circle, in the middle of a village named; Rahravan (locally pronounced as Rarun), one faces another minaret of the action the bottom measures 3.5 meters by 3.5 meters and 60 centimeter high, with a gradual change in the section, sizes of 3 meters by 3 meters, (from the viewpoint of having the square base, it is similar to Gaar minaret), and 1.2 meters higher than the base, converts into a circular one 3 meters in diameter. On its shaft, there are three charming inscriptions of turquoise blue mosaics with Kufic masonry (the letters are connected to one another at a 90 degree angle) style, in three different levels with a considerable distance from one another, distinguishable from the other Seljuk minarets. On its neck, there is a sudden transition into a smaller circular section, on which another line of inscription, on blue mosaics with Sols Style affirming, the Islamic faith, “There is no God except Allah” and “Mohammad is the messenger of Allah” with a lighter and more vivid color, than the above mentioned three lines on the lower levels.
This part of the minaret is about 7 degrees diverted from the orthogonal direction. On the shaft, there are six openings five of them have 15 degrees tolerance facing the Kiblah. It is 42 meters high, with an entrance at the level of 2.2 meters from the bottom, with 1 meter by 1.5 meters dimensions, covered by bricks and plaster. The thickness of the shaft at the level of the crown is 20 centimeters. The bricks have two different sizes, the first one is 20 centimeters by 20 centimeters and the second is 40 centimeters by 40 centimeters. At the level of 7 meters from the base, on the shaft just opposite direction of the Kiblah, there is a rectangular panel, 5 centimeters deep, which probably carried some inscriptions about the endower and its date with plaster gypsum or mosaics that were faded gradually.
The minaret is in the middle of an open area surrounded by the houses, and it does not seem that there was any mosque in its neighborhood. Probably, it was a single minaret as a guiding light for the nightly passage of caravans around Esfahan, and that is why it is, etymologically, called; Rahravan wayfarers), Mr. Smith (20th century), the archeologist estimated its date as 1179_1289 AD

-Dar-ol-Ziafeh' The Twin Minarets with the Nicest Designs of the Mozaffarid Era
Dar-ol-Ziafeh' twin minarets are the only remnants of the magnificent entrance gate of the historical, royal caravanserai of the "Ale-Mozaffar period. In reality, the style of their decorative tile work is very beautiful and different. They are about 38 meters high, and the style of their restoration on the crown is not harmonious with its shaft, and it is clear that the crowns are not original.

- Dardasht Twin Minarets and Sultan Bakht Agha Two Inseparable Neighbors since 7 Centuries ago
From "Sabz-e-Maydan' Circle towards 'Chahar Bagh-e-Paien' on the northern side and after 200-meter walking, we enter the main bazaar, then after another 150 meters, we turn left into an alley and 100 meters farther, we arrive at 'Hammam-e-Sheikh', where 250-meter interval exists to destination. The site is in the middle of Dardasht, an old famous quarter of Isfahan. The key to the site kept by an old man named; Haj Ali living around there.
After opening the original heavy wooden door, one may pass through the narrow portal (13 meters high and 3.7 meters wide), flanking by twin minarets each one 8 meters high from the top of the portal. The decorative minarets are very similar to "Bagh-e-Ghoosh-Khaneh', a single minaret of the same age. For example, on their shaft, there is a wide dark blue spiral tile work with mystical meanings. Unfortunately, nothing remained of the tile work on the 50-centimeter band of the portal. By guess, the entrance with twin minarets was either the portal of a school or a caravanserai resembling Darroziaffeh portal of the same age. In the dome chamber, Sultan Bakht Agha, an educated charming lady and Sultan Mahmoud Ale-Mozaffar's wife (the king of Iran) buried The Queen was killed by her husband's volition. Below the dome, on a tombstone made of one block of homogenous pale-reddish stone with a carved cypress as well as the inscribed date of 1367 A.D., which was ordered to build by her during her lifetime as if she herself knew her fate!
The dimensions of the dome chamber are 5.3 meters by 5.3 meters and 6.5 meters high. The thickness of its walls measures 1.9 meters and the dome is 18.5 meters high. One of its unique specifications is the existence of geometric figures given a very different view of the dome. By using the inlaid mosaics on the background of the bricked dome, especially on the neck of it, there are 14 pentagons with 14 other similar smaller pentagons inside each of them. Between the peaks of each pair, square shape and another similar square with a larger size exists are available from peak to peak of the larger pentagon. Thus with 64 geometric figures, the surface of the dome is classified into four different levels displaying an exquisite optical attraction suggestive of its mystical meanings. This style of ornamentation has donated such glory and purity to the dome that one can feel it without being able to describe it.

- Bagh-e-Qosh Khaneh: One of the Most Elegant and Fully Decorated Minarets from the End of the Ilkhanid Era.
This minaret is located on an octagonal base (0.8 meters high) which bears a circular minaret of 2.2 meters diameter on the top. There are remnants of an old irregular wall (6 meters) of the old mosque which gives a total height of 38 meters.
From the point of tile work and decoration, this minaret as a single minaret is one of the richest and most beautiful ones in Esfahan. Its appellation relates to its proximity to an old garden of the Safavid era which was used for breeding birds of prey. The openings on its shaft are precisely facing the east. On the elevation of the 24 meters at the neck of the minaret, we can find very beautiful pendentives embellished by inlaid mosaics and on the base of its crown the same style can be found with a smaller size and the same quality. On the shaft of the minaret from the base, there is dark blue spiral tile work with enough space which allows inscription of some holy prayers along with turquoise tiles.
Ozhan Flandin, the famous 19th-century traveler, described it as a small mosque, but a real jewel in Iran and drew a sketch which shows that there were two other small minarets at the portal of its mosque near the single existing minaret. The minaret is being restored (2003), so there is a scaffolding set up around it.

Menar Jonban or Shaking Minarets A Wonderful Structure of the Ilkhanid Era

- Menar Jonban or Shaking Minarets A Wonderful Structure of the Ilkhanid Era
On 'Chahar Bagh-e-Abbasi' Boulevard via Sheikh Bahaie street, 9 kilometers straight ahead on the right of the free-way, the facade of the Menar Jonban known as a shrine over the tomb of Amu (Uncle) Abdollah, a hermit mystic comes into view. According to a carved tablet of stone, orthogonally fixed on the wall, it dates back to 1316 A.D. Although its rectangular plan only covers an area of 146 square meters, the monument enjoys worldwide fame. It is considered one of the most popular monuments of Esfahan because of its wonderful characteristics.
To convince inquisitive minds, much endeavor is made to offer some logical explanations concerning this controversial monument. One, who visits the site, amazingly observes that after climbing 17 spiral steps in the minaret to the open arched summit, pressing tightly through the openings and shaking strongly one minaret, another minaret starts shaking with the same frequency simultaneously: however, within a shorter time. In reality, the whole structure oscillates when only one minaret is shaken. Therefore, the vibration can be felt in the whole structure, but it is very slight. To make the phenomenon more tangible, a bowl can be put over the tomb. If you shake one minaret, some concentric waves are formed on the surface of the water. Another way to feel the vibration of the structure is to sit on the northern or the southern parapets of the roof as if you were sitting on a rocking chair.
After getting a mental picture about the phenomenon, normally two questions may be raised. The first is that: Why do not the minarets collapse when they are shaken? Although they were not made of resistant or wood, they are safe and sound. The second question is minaret vibrate automatically when the other minaret is shaken? Concerning the first question, it was discovered that each minaret was intentionally designed with a high-safety factor, reinforced enough to bear resistance against successive cycles of dynamic loadings by a person on its top. To prove the intentional design, one can observe to the normal joints existing on each side of the minarets with a 3- centimeter gap. Thus, the designer set each minaret free on the lateral sides to let it shake easily and freely. Due to the joints on the stem of the minarets at critical levels, there are two wooden frames, as a relatively flexible bed. for an easier movement. By considering these aspects, it is possible to conclude that a high level of structural knowledge for analysis and design employed. The second question can be answered by introducing two physical devices as the elementary prototypes of the structure:
1) If one of the “U-shaped' arms of a tuning fork shakes, the other arm vibrates automatically with the same range and frequency.
2) A Resonance Box is a device made by fixing two equal metal bars clinging orthogonally to a hollow wooden box. If one vibrates the bar, the mechanical energy of the stroke changes into kinetic energy, transfers to the other bar causes vibration with the same frequency and range in the other one. Comparing the prototype of the Resonance Box which has a homogenous texture with the relatively huge structure of the Menar Jonban does not seem very suitable, but it can give us a better appreciation of the mechanism of the structure. Another point worth mentioning is that this characteristic is not restricted to Menar Jonban. For example, about 40 Kilometers west of Esfahan, in Oshtorjan village, there is a 'Jam-e-Mosque' with two minarets of the same period which has partially fallen into ruin. The minarets could be shaken in the same way as Menar Jonban, and it was also contemporary with the structure according to its inscribed date. On the other hand, according to recent researches carried out by Dr. Shahin Poor (2003), it became evident that the bricks employed in Menar Jonban and Oshtorjan Jam-eMosque' are of the same materials, and both of them have the higher ratios of Modules of Elasticity compared with the bricks used in other parts so that this research paved the way to justify this phenomenon reasonably. During the research, it was hypothesized that both of the used bricks came from one location and baked in same brick-kiln simultaneously. Ibne- Battuta (14th century), a famous Moroccan traveler, also narrated in his travelogue that he visited a mosque in Basra (in Iraq) attributed to Emam Ali (a.s.) that had seven minarets, inter alias, one of them was shaking. In Baluchistan Province, there also was a shaking minaret.
So, we can observe that innovations, which were introduced by elite architects, aroused remarkable admiration in the hearts of visitors and pilgrims who interpreted it as a miraculous thing. The minarets are 10.5 meters from axis to axis of one another at ground level, about 7.5 meters high from the roof level and 10.3 meters from zero level to the roof top. Below the arched portal, the inlaid mosaics depict rare decorative designs similar to cross shapes (+). On the stem of the minarets, combinations of baked bricks and inlaid mosaics with some wavy lines remind us of some other minarets in Esfahan from the same period connote some mystical meanings for spiritual promotion of a mystic.

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  • Isfahan_Bagh-e-Ghoushkhane_minaret
  • Isfahan_Chehel_Dokhtaran_Minaret
  • Isfahan_Dar-ol-Ziafeh_Minaret
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  • Isfahan_Dardasht_Minaret
  • Isfahan_Gar_Minaret
  • Isfahan_Minaret
  • Isfahan_Minaret_1
  • Isfahan_Sareban_Minaret
  • Isfahan_Sareban_Minaret_1
  • Isfahan_Shaking_Minarets
  • Isfahan_Ziyar_minaret