Perperikon

Perperikon - Credit: Wikimedia Commons

The ancient Thracian city of Perperikon (also Perpericum; , , ) is located in the Eastern Rhodopes, 15 km northeast of the present-day town of Kardzhali, Bulgaria on a 470 m high rocky hill, which is thought to have been a sacred place. The village of Gorna krepost ("Upper Fortress") is located at the foot of the hill and the gold-bearing Perpereshka River flows nearby. Perperikon is the largest megalith ensemble site in the Balkans. Read more on Wikipedia

type: ancient site
date from: 5000 BCE, Bronze Age, Iron Age, Classical era

Source: en.wikipedia.org