1987 Simferopol speleologists discovered a huge complicated cave of unbelievable beauty. 1989 after all necessary preparations had been done, Marble Cave opened for tourists. Speleologists claim, that it is one of the most beautiful caves on the planet and one of the most frequently visited ones in Europe.

 It would seem that people have long since done away with living in caves, and even now no intention of returning to them. However, in Cappadocia (Turkey) is a cave, a room in which people are willing to pay more and more. It is a cave hotel Yunak Evleri Cave Hotel. The hotel consists of 6 separate systems, which in total has 30 rooms carved into solid rock.