Hierapolis was built in 190 BC as a sanatorium. It flourished during the Roman Empire and flourished until Byzantine times. But frequent earthquakes brought disaster, and after a major earthquake in 1334, they were abandoned. The Hirapolis site is an intriguing and thought-provoking site located in Denizli province in southeastern Turkey, about 22 kilometers from the town on the north bank of the Kuruksu Valley. The site is about 500 meters above sea level, and the Kokrez mountain, which is close to the north of the park, is 1,840 meters high. The apex is certainly higher, but in the area around the park, the height of the high mountain point is 2,308 meters (Babadag Peak) and 2,571 meters (Hornez Peak). From the Roman era, snow-white limestone, along with hot springs, was considered to have a magical, immense power.