The archaeological site covers the area of the former capital of Dacia, a historical land that existed in modern Romania before it was conquered by the Romans. Currently, you can only see the ruins of two temples, the remains of the defensive walls and a partially reconstructed sundial. The complex was inscribed on the UNESCO World Heritage List.
The city was founded on the top of a high cliff, at an altitude of 1,200 m above sea level, most probably during the reign of King Burebista, i.e. in the 1st century AD. It was surrounded by a massive defensive wall. Interestingly, it had its own sewage system made of clay pipes through which water was supplied during sieges. The fortress was attacked and destroyed by the Romans in AD 106, during the war of the Dacian king Decebalus against the Roman Empire.