Getaways with sauna

Aspen, Colorado

A century-old guest ranch on the Frying Pan River about an hour from Aspen, with cabins, hot tub, sauna and room for up to 70 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.