Beyşehir (Beg Şehir) is a city in south-central Anatolia (in present-day Turkey) that is located on the southeastern shore of a lake of the same name. It has been identified as the ancient settlement of Mistheia, which was situated on the border between the regions known to the ancient Greeks as Pisidia and Lycaonia. Lake Beyşehir (Turk. Beyşehir Gölü)-the largest freshwater lake both in this region and all of Turkey (656 km 2 )-was called Karalis in antiquity and referred to as Pousgoýse límnē in later Byzantine