The south of Transylvania is home to the strongest fortification across the kingdom of Dacia. Most likely, the fortress was built in two successive stages during the reign of Burebista and Decebalus, to serve first as a defense against the Celts, then against the Romans. First, a tower-house was built on the hill, at the altitude of 705 meters, by one of the local aristocrats, before the reign of Burebista. This king ruled between 82 and 44 BC and was assassinated in the same year as his great rival, Julius Caesar.