İsa Sofi - Credit: Wikimedia Commons
The Tomb of İsa Sofi () is an early 14th century tomb located in Borcak, Söğüt in the district of Bilecik, Turkey. The tomb contains "shamanic" decorations of Gök Tanrı (sky god), related to Central Asian Turkish beliefs—the first such decorations found in Anatolia. The tomb was dedicated to İsa Sofi, a friend of Ertuğrul, father of Osman Gazi (Osman I), founder of the dynasty that ruled the Ottoman Empire. İsa Sofi had a lodge in the area at the time of Osman I. Read more on Wikipedia
Source: en.wikipedia.org