Located in southern Serbia, Djavolja Varos is an interesting natural formation of rock towers that seem to take the shape of a city of sorts. The mystery of these formations, being almost sculpture-like, caused locals to give it its eerie name, which translates as Devil's Town. 

These naturally formed towers, 202 of them in total caused by centuries of erosion, are similar to those found in Cappadoccia, Turkey, and are a certain rarity on the European continent.

The area is also home to a popular natural spring spa, one of which has healing acidic waters.