Getaways with sauna

Rovaniemi, Lapland

A 12 m² glass igloo with a private hot tub near Rovaniemi, built for one-night stays for up to two guests.

Santa Teresa, Puntarenas

A 13-bedroom treehouse retreat near Playa Hermosa in Santa Teresa, Costa Rica, built around a large sauna and jungle lookout decks.

Jackson Hole, Wyoming

Heated geodesic domes five minutes from Jackson Hole Mountain Resort and Grand Teton National Park, with mountain views, sauna, and fire pit.