First underwater hotel
Jules' Undersea Lodge
United States (Key Largo)

The first entirely underwater hotel is Jules' Undersea Lodge, in Key Largo, Florida, USA, which opened in 1986. Guests dive down 9 m (30 ft) to the lodge, which sits on legs 1.5 m (5 ft) off the bottom of the Emerald Lagoon, entering via a "moon pool" entrance in the hotel. The air-conditioned interior boasts two 2.4 x 3-m (8 x 10-ft) bedrooms plus a 2.4 x 6-m (8 x 20-ft) common room. Originally built as an undersea research laboratory, the lodge was co-developed as a hotel by Ian Koblick and Neil Monney. Guests have included former Canadian Prime Minister Pierre Trudeau and rock star Steve Tyler of Aerosmith.