Perpericon (Перперикон)

An ancient Thracian city entirely graved into the rocks of the hill of Perpericon in the Eastern Rhodopes Mountains, in the vicinity of the town of Kardjali. On the hilltop there is a fortress – an acropolis. A temple-palace is situated just below the acropolis, and there are two outer cities on the Northern and Southern sides of the hill. Some archaeologists believe that Perpericon is the place of the legendary Dionisus temple.