https://itto.org/iran/photo/inside-radkan-tower-chenaran-khorasan/
PHOTO: Radkan Tower Chenaran - Khorasan Razavi - Iran Travel and Tourism
Designed by great Iranian astronomer, mathematician, and scientist Khaja Nasir al-Din Tusi, Radkan Tower was constructed in 1261 A.D. Located in Khorasan...
travel and tourismkhorasan razaviphotoradkantower