Usually, the most expensive hotel rooms, designed for the most important guest is a penthouse, which is situated at an altitude of 500 feet above the ground. But not in this hotel, located in Switzerland. The number one night which will cost 380 pounds, at a depth of 509 feet below ground. For many years, this place was mine, where silver was mined, but over time, it was abandoned and is not suitable for anything. Clever people made ​​it into an unusual underground hotel, and it has paid off.