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Tourists walking along the white travertine terraces filled with blue thermal water at Pamukkale, Turkey, on a sunny day.

Pamukkale Travertines (Cotton Castle)

Address: Pamukkale, 20190 Denizli, Turkey.

The Pamukkale Travertines, also known as the “Cotton Castle,” are an iconic natural wonder in Denizli, Turkey. These stunning white terraces are formed by calcium-rich thermal waters flowing down the hillside, creating shimmering pools of turquoise. The travertines have been a popular site since ancient times, once visited by Greeks and Romans for their believed healing properties. Today, visitors can walk barefoot on the terraces, soak in the warm waters, and enjoy the panoramic views over the scenic valley. This UNESCO World Heritage site beautifully blends natural beauty and ancient history.