Curegarden Open Air Bath
Hot SpringsGero, Gifu
An outdoor-only onsen in Gero with rock-built baths, a cascade bath and three-temperature pools, open daily except Thursdays.
Facilities access for the day without a treatment or a room.
6 spas match
Gero, Gifu
An outdoor-only onsen in Gero with rock-built baths, a cascade bath and three-temperature pools, open daily except Thursdays.
Nozawa Onsen, Nagano
A public day-bathing hall in Nozawa Onsen village with indoor hot and warm baths plus an outdoor hot spring bath, open to walk-ins year-round.
Gero, Gifu
Gero's riverside hot-spring source pool in the town center, where visitors can touch the water and take photos, though full bathing has been banned since
Mexico City, Quintana Roo
A Japanese-style hotel spa in Mexico City's Cuauhtémoc district with tatami suites, outdoor onsen baths and a $2,080 day pass for couples.
Ibusuki, Kagoshima
Oceanfront outdoor onsen in Ibusuki where the two gender-assigned baths swap daily, with views of Mount Kaimon, the East China Sea, and Take-yama.
Kurokawa Onsen, Kumamoto
Okunoyu is a ryokan onsen in Kurokawa Onsen, Kumamoto, with outdoor thermal baths open to day visitors and overnight guests, daily 8:30am–8:30pm.