Silver Mine Hotel, Sala, Sweden

Guests can sleep 155m underground in a suite in historic Sala Silvermine, one of the world's best preserved mines and the world's deepest bedroom.

Its dark winding galleries, vast caverns and magical lakes can be explored with a guide on arrival, and basic refreshments are provided in the suite, plus breakfast in the morning.


Corridors are cold, damp and dark but the bedroom is heated to a comfortable 18C and features silver candelabra and silver leather chairs.

The site also has an (above-ground) hostel, and a high-wires adventure course. • Underground suite £414 a night for two, including breakfast.