Visit Pamukkale and Hierapolis on a 7-hour guided tour. Enjoy a relaxing soak in the hot springs and take in the unique white limestone terraces, known as travertines. The ancients believed that Hierapolis, or Sacred City, was founded by the god Apollo. It was famed for its hot springs, whose vapors were associated with Pluto, the god of the underworld. The hot springs were popular in Roman times because of their therapeutic powers. Visit the Domitian Gate, the colonnaded street and the cathedral. Explore the Pamukkale Museum and marvel at the limestone terraces of Pamukkale. The healing powers of the hot springs led to the establishment of a spa resort.