According to historical documents, Davazdah Imam Memorial (in Persian, twelve Imams) is the oldest building in Yazd. It was built in 1028 A.D, on the ground of a ruined fire temple belonging to the Sasanian period. The monument was built using the Kufic style and therefore it is important for Iranologists.
The memorial is shaped like a rectangle. Underneath the dome, these four sides change into an octagonal and the dome is placed on the octagon.
There is a mihrab (a semicircular niche in the wall of a mosque that indicates the qibla; that is, the direction of the Kaaba in Mecca and hence the direction that Muslims should face when praying) inside the dome that makes it look like it was formerly a mosque.
Davazdah Imam Memorial is located in Fahadan quarter just above the Ziaieyeh Madrasa (Alexander’s Prison).