Hotel Russia

Shoe hotels are hotels built into a giant shoe. The idea was inspired by the "Old Woman who lived in a shoe" myth. The largest such hotel is currently in Hokkaido, Japan. The most popular shoe hotels are modelled after a woman's platform dancing shoe.
Cave hotels
The Cuevas Pedro Antonio de Alarcón (named after the author) in Guadix, Spain, as well as several hotels in Cappadocia, Turkey, are notable for being built into natural cave formations, some with rooms underground. The Desert Cave Hotel in Coober Pedy, South Australia is built into the remains of an opal mine.