Scottsdale, Arizona
Hotel spa at the Inn at Eagle Mountain in Fountain Hills with sauna, steam room, pools and a $69 60-minute massage as its signature treatment.
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Spas with thermal pool
3 spas match
Spa Aiyana
Resort SpaCarmel-by-the-Sea, California
Resort spa at Carmel Valley Ranch with 12 treatment rooms, private terraces, a saltwater pool and infinity hot tub, open to adults by reservation.
$$$$The Spa at Vinarosa
Day SpaCalistoga, California
A 20-treatment hotel day spa in Santa Rosa with an indoor caldarium plunge pool, eucalyptus steam rooms, and walk-in or reserved day passes for adults 18+.
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