From Selcuk we took a train east to Denizli, and then made our way north to the town of Pamukkale. The draw to Pamukkale for most tourist is the travertine pools and the ancient city of Hierapolis nestled at the top. The travertine pools were once much more spectacular than they are now. The springs are now controlled and water is directed to fill mostly man made pools.  Hierapolis was founded as a thermal spa early in the 2nd century BC and attracted people from all over to seek cures for their ailments in the medicinal waters. 2000 years later, people are still traveling there for the same reason.