Nympheum (Monumental Fountain)
Water was brought to the city from the source of Suçıktı in the Sultan Mountains, about 11 km to the northeast of the city. Water from the 1465 m high spring was reached to the Nympheum reservoir with a height of 1178 m with solutions (tunnels, canals and aquaducts) that were suitable for the condition of the land. According to the slope of the terrain, the tunnels constructed below 1 m underground are approximately 1 m wide and 1.5 m height. Only 200 meters of aquaducts have been preserved. 3000 cubic meters of water are distributed to the city on average daily.
The fountain building, which was built in the form of a large "U", has a dimension of 27x11.76 m. The facade architecture carried with Corinthian capitals is decorated with sculptures and reliefs. The aqueducts and the fountain building should have been built during the early imperial period (1st century BC). The 30X150 m square in front of the fountain should be the area where human traffic is the most intense in daily life. The inscription of the Governor Diogenes, on the eastern edge of the square, indicates that it was used for political propaganda in addition to daily life.