Tripolis was founded at 40 km north of Denizli city center along the slopes between Buyuk Menderes stream and Yenicekent town and it was a trading and agriculture center providing transport to Hickory within the Lydia region and to Phrygia regions. It was assumed that the city was founded by the Bergama Kingdom and the best examples of the monuments were built during the 1st and 2nd centuries A.D. Since its name was mentioned in the list of Lydia bishops who attended to the Nikea (Izmit) Assembly on 325 A.D., we can assume that the city was at episcopate level.