Kayseri Castle was built during the Roman period in Kayseri, the center of Anatolia. It was narrowed during the Byzantine Period. It consists of the outer castle and citadel. The castle was repaired during the reign of Seljuk Sultan Alaeddin Keykubat I, then Karamanogullari, and Osmanogullari. Today, it takes place in the city center as a medieval castle and is one of the most visited places.