Barcelona, Catalonia
Adults-only thermal baths in a converted 18th-century building near Barcelona's Born market, with soaking pools, massages and couples rituals.
$$$
Day Spa
Stand-alone spas open to the public for treatments and facilities by the day.
9 spas match
Billion Onsen and Spa
Day SpaKuala Lumpur
An onsen-style day spa in Kampung Baru, Kuala Lumpur, with thermal pools, sauna, steam room and couples treatments.
$$Bio Azur Thalasso
Day SpaHammamet, Nabeul
Seafront thalasso spa in Hammamet Est with a thermal pool, 42 treatments, and day passes open daily from 8am to 7pm.
$$Da Nang
A Korean-style bathhouse and onsen complex in Da Nang's Hoa Xuan area, with hot spring baths, 11 sauna rooms, massage and a riverside restaurant.
$$Hürlimannbad & Spa
Day SpaZurich
Thermal baths and rooftop infinity pool set in a former Zurich brewery's historic vaults, with a Roman-Irish spa ritual and day-pass access.
$$Tamarind Springs
Day SpaKoh Samui, Surat Thani
A forest day spa on Koh Samui built around granite steam caves, waterfalls and plunge pools, open daily with walk-in or day-pass access.
$Terme Sensoriali
Day SpaChianciano Terme, Tuscany
Thermal day spa in Chianciano Terme offering day passes, couples massages and a wellness-food menu, closed Thursdays and Wednesdays.
$$New York City, New York
Thermal bath circuit and massages in a restored 1883 Tribeca textile factory, with a skylit tepidarium and candlelit thermal pools; reservation required.
$$$Momiji Onsen & Spa
Day SpaKrabi
A moderately priced onsen-style day spa in Ao Nang, Krabi, open daily from late morning into the night.
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