The hot springs are known in Turkey since ancient times. Water flowing down the slopes of the mountain forms a cascade of reservoirs with bizarre limestone walls. Dazzling white terraces (travertine formation) appeared on the hillside as a result of salt deposits from saturated calcium sources. In 1988, Pamukkale and the ruins of Hierapolis are included in the UNESCO World Heritage List.

Very old photos of Egypt in the days when there were still very few tourists and a lot of Egyptians.