Alahan Monastery (Turkish: Koja Kalessi) is a complex of fifth century buildings located in the mountains of Isauria in southern Asia Minor (Mersin province in modern day Turkey). Located at an altitude of 4,000 ft, it stands 3,000 ft over the Calycadnus valley and is a one-hour walking distance from the village of Geçimli. Although termed a monastery in many sources, this attribution is contested and more recent scholarship consider it to be a pilgrimage shrine. The complex played a significant role in the development of early Byzantine architecture, and practically everything known about it can be attributed to the excavations of Michael Gough.
