Spas with hot tub

Sapporo, Hokkaido

A neighborhood public bathhouse in Sapporo's Chuo Ward, open daily from 7am to 1am, with shampoo and body soap provided and walk-ins welcome.

Palm Springs, California

A hotel-guests-only desert resort in Desert Hot Springs built around natural mineral hot spring pools, with spa treatments and overnight stays.

Denver, Colorado

Adults-only bathhouse on West Colfax Ave in Denver with a steam room, sauna, hot tub and relaxation lounge, open daily except Tuesday.