Fancy stripping off before a flight and getting sweaty with fellow passengers? Finnair think you might like to and has backed the idea by adding a sauna to its new premium lounge in Helsinki Airport.

The mixed-gender nude saunas advise you to bring slippers and a robe for wandering around and they generally have restaurants where you can have a nibble and drink in-between spa sessions, so it ...

No swimsuits allowed Austria and Germany abound with spas called thermen — resorts with pools, saunas, lakes, restaurants, bars and treatment areas.

Hot sauna, cold plunge. Here’s where to try contrast bathing From Finnish saunas to Korean ice tubs, these spas specialize in the practice of alternating between intense heat and intense cold.

Felix Kühn manages the 'textile-free' sauna at Vabali Spa Berlin, where guests must be nude to access facilities. He describes what his job is like.