Hierapolis had two nymphaeums which where fed by these waters. The first monumental fountain is visible from the south of the main street. In front of the fountain in the peribolum of the Temple of Apollo is a pool. On the facade of the wall in the rear stood statues. Observation has been made of the fact that in the construction of this fountain rocks transported from other places had been used.

The construction of this decorated fountain dates from the end of IIIrd century AD or beginning of IVth. On the two walls of the larger one a Byzantine door had been constructed which transformed them into walls in which caravanserails would take shelter. Here one can see some of the sections of this refined art.