The Thracian tomb at Shushmanets is a mound located in the Valley of the Thracian Rulers. It was built as a temple in the 4th century BC and later used as a tomb.
Wikipedia https://en.wikipedia.org/wiki/Thracian_tomb_Shushmanets
Official Website http://www.muzei-kazanlak.org/index.php?option=com_content&view=article&id=74&Itemid=90&lang=en
Address Bulgaria
Coordinates 42°42'25.744" N 25°20'55.588" E