Perperikon is an ancient Thracian city located in the Eastern Rhodopes, 15 kilometers North-West of the present day town of Kardzhali.
Perpericon is thought to be a sacred place. Human activity in the area dates back to 5000 B.C.
The first traces of civilization on the hill date from the Bronze Age, while the ceramics found on the place date from the Early Iron Age, as well as the impressive round altar, almost 2 m in diameter, chiseled out of the rocks.
At the time of the Roman Empire, a giant multi-story palace was erected according to archaeological evidence, and an imposing with its size fortress was built around the hill, with walls as thick as 2.8 m. Temples and quarters of residential buildings were also constructed in the fortress.
A church pulpit was found by Bulgarian archaeologists at the peak of the Thracian rock sanctuary on 10 September 2005. It is thought of as the first finding of the kind in Bulgaria. The pulpit was probably built at the end of the 4th century AD or the early 5th century during the reign of Byzantine Emperor Honorius and coincided with the period of the christening of the Thracians in the Rhodopes area.
The Perperikon megalith complex had been laid in ruins and re-erected many times in history.