Gonbad-e Sorkh - Credit: Wikimedia Commons
The Gonbad-e Sorkh (means The Red Dome) is the name of a historical building in Maragheh, Iran, built in 1147 AD (542 AH) in the Seljuq dynasty period. The architectural style of this building is Razi style. Read more on Wikipedia
Source: en.wikipedia.org