If I ever go back to Turkey. Amazing place in Pamukkale, Turkey The Pamukkale travertine pools are a strange formation caused by thermal springs that have been going forever. The mineral composition of the water creates white travertine pools.
Derinkuyu Underground City, Cappadocia region 18 miles from Nevsehir,Turkey. It is one of over 200 underground cities discovered in the region, but it is notable for being the biggest and the deepest. With 11 floors & depth of this ancient city can a