Spas with walk-ins welcome

New York City, New York

Adults-only day spa on Governors Island with heated outdoor pools, saunas and an Italian-style café, reachable by ferry from Manhattan.

Noboribetsu, Hokkaido

A free natural footbath fed by hot spring overflow along the Oyunumagawa trail near Taisho Jigoku in Noboribetsu, Hokkaido.

Reykjavik, Capital Region

An oceanfront thermal bath in Kópavogur near Reykjavik, open daily with outdoor pools facing the sea and walk-in day passes.

Ourense, Galicia

An outdoor hot-springs spa in Ourense with thermal pools, walk-in day passes, and hours that run late on weekends.

Bath, England

A small open-air thermal pool in a separate building from Thermae Bath Spa's main complex, with its own changing rooms and day-pass access.

Wulai, New Taipei

Xiao Chuan Yuan is a hot-spring restaurant in Wulai, New Taipei, pairing soaking pools with table service, open daily except Thursday.

Chianciano Terme, Tuscany

Hotel spa in Chianciano Terme open to non-guests, built around a 450 sqm holistic water, color and massage circuit.

Sokcho, Gangwon

A free outdoor footbath park in Sokcho fed by local hot spring water, open daily 9am to 5:30pm, no booking needed.

Papallacta, Napo

A budget-friendly thermal pool complex in Papallacta with an on-site restaurant, open daily from 6am to 8pm, walk-ins welcome.

Ranong

A budget thermal-bath spot in Ranong with a soaking pool and an on-site café, open daily 9am to 10pm, walk-ins welcome.