Hotel Russia

Some hotels have accommodation underwater, such as Utter Inn in Lake Mälaren, Sweden. Hydropolis, project cancelled 2004 in Dubai, would have had suites on the bottom of the Persian Gulf, and Jules Undersea Lodge in Key Largo, Florida requires scuba diving to access its rooms.
Other unusual hotels
• The Library Hotel in New York City, is unique in that each of its ten floors is assigned one category from the Dewey Decimal System.