This is Üçhisar Castle in Cappadocia, one of Turkey's most popular tourist destinations. Cappadocia is a fascinating area, featuring unusual volcanic formations, "fairy chimneys," dune-like rocks, entire underground cities, and early Christian churches, monasteries and residences situated in rock formations. Additional images of Cappadocia are located on the last half of this page http://www.pbase.com/helenpb/here_and_there_in_turkey The castle itself is a tall volcanic outcrop riddled with tunnels and windows and is visible for miles.