Hierapolis is located in the neigbourhood of pamukkale, turkey.

There are no many historical facts known about the origin of the city, no traces of the presence of hittites or persians have been found. The phrygians built a temple devoted to hieron, most likely in the first half of the third century BCE. This temple later centred hierapolis. It was already used by the citizens of the nearby town Laodiceia, a city built by antiochus 2nd theos in 261 - 253 BCE.

The Hellenistic city was built with parallel or perpendicular streets to the main street. The main street runs from north to south close to a cliff with the travertine terraces. It was about 1500 metres / 4900 feet long , 13.5 metres / 44 fee twide and bordered on both sides by an arcade. At both ends of the main street there is a monumental gate, flanked by square towers built of massive blocks of stone. There is another gate, the domitian gate, close to the northern city gate. This triumphal arch, flanked by circular towers, is consisted of three arches and was built by proconsul frontinius.
 
Sighnificant structures are: theatre, themple of apollo, plutonium, nympheum, necropolis, martyrium.