Immerse yourself in a remarkable underground adventure! Discover the most unique and unusual holiday ideas around the world. Start planing your next adventure!
Felsenhotel La Claustra
Spend a night in this restored underground army fortress in the middle of the Swiss Alps under the Gotthard Pass.
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Buda Castle Caves Walking Tour
Enjoy the more intimate experience of a small-group with this nice Cave Walk Tour in Budapest.
The Lookout Cave Underground Motel
Spend a night in The Lookout Cave Underground Motel in Australia.