Pamukkale, located in southwestern Turkey, is a natural site famous for its white terraces of travertine, a mineral deposited by water flowing from the hot springs. The terraces are formed when warm, calcium-rich mineral water cascades over the cliff edge, cooling and depositing in the process. The terraces it creates are a dazzling white, with pools of water that reflect the sky. The ancient Greco-Roman and Byzantine city of Hierapolis was built on top of the white castle which is in total around 2,700 meters long and 160m high. In addition to the travertines, tourists can explore the remains of the ancient city, including the baths, temple ruins, and a well-preserved theater. The site also includes a museum, which serves as an excellent place to learn more about the area's history. The waters in the area have been used as a spa since the 2nd century BC, and people came to soothe their ailments, with many of them retiring and dying here. Pamukkale is a UNESCO World Heritage site and is often combined with a visit to the nearby ancient city of Ephesus and other cultural attractions in the region.