Getaways with solo

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.

Queenstown, Otago

Free, basic four-bunk hut in Otago's Whakaari Conservation Area near Glenorchy, reached by an 8-10 hour advanced return track.

Joshua Tree, California

Private desert cabins near Joshua Tree, each with its own hand-carved mineral hot tub fed by a geothermal spring 340 feet underground.