The widest, the enchanting and one of the most wonderful underground city in Cappadocia, attracts millions of hearts. It is situated on the Ihlara Road, 10 kms from Derinkuyu. This place is miraculously well protected and maintained structure is a part of UNESCO World Site. And interestingly it was used by earliest Christians living in the region from 4th Century to guard them religious tortures. It is also believed that approximately 3,500 people once lived here.