Radkan Tower Chenaran - Khorasan Razavi
Designed by great Iranian astronomer, mathematician, and scientist Khaja Nasir al-Din Tusi, Radkan Tower was constructed in 1261 A.D. Located in Khorasan Razavi Province, the structure benefits from interesting astronomical capabilities such as finding the first day of all seasons and leap years.
Copyright: Mohammad Ghafourian Nasiri