Momine Khatun Mausoleum - Credit: Wikimedia Commons
Momine Khatun Mausoleum () is a mausoleum, also known as the Atabek Dome, located in the city of Nakhchivan of the Nakhchivan Autonomous Republic in Azerbaijan. It was built in 1186 by the architect Ajami ibn Abubekr Nakhchivani. The ten-sided mausoleum reached a height of 34 meters. Today its height is only 25 meters (without the tent, which has not been preserved). The mausoleum, built and named after the mother of one of the local rulers of Azerbaijan, Atabek Jahan Pahlavan of Ildegezid dynasty, is masterfully decorated with complex geometric ornaments and inscriptions from Koran. Read more on Wikipedia
Source: en.wikipedia.org