Aẓhar, Imāmzādah, known as Imāmzādah Aẓhar b. ʿAlī, this tomb and its tower are in Darguzīn, 5 km east of
the town of Razan and 85 km north-east of Hamadān.
This structure has only come to the attention of geographers, historians and travellers in recent decades and hence little has been written about it. Godard was the first scholar to mention it (pp. 260–261), followed by Muṣṭafawī who made a comprehensive study of the structure (cf. pp. 204–210).
In terms of design, this structure is typical of the tomb-towers that were built from the 4th to 8th/10th to 14th centuries …