Pamukkale is a well-known hot spring resort located north of Denizli, Turkey. The area not only has thousands of natural hot springs, but also has quirky cotton ball-like hills, which, despite their soft and fluffy appearance, are actually made of hard limestone. In 1988, Pamukkale was listed as a World Heritage Site, along with the ancient city of Hierapolis, located above it. The unique stair-stepped “cotton ball” hills of Pamukkale are a beautiful and unusual landscape that can only be seen here. The waters of the hot springs flow down from caves at the top of the hill and wash down the slopes, leaving mineral deposits along the way.