Palm Springs, California
Adults-only hot springs resort on Miracle Hill in Desert Hot Springs with private mineral tubs, a Finnish sauna, salt room and 35 spa treatments.
$$$
Spas with relaxation lounge
4 spas match
Scottsdale, Arizona
North Scottsdale day spa with massage, facials, sauna, steam and a thermal pool, plus private suites for couples and groups.
$$Riviera Maya, Quintana Roo
Adults-only spa inside the all-inclusive Ocean Riviera Paradise resort in Playa del Carmen, with sauna, Turkish bath and four treatment options via day pass.
$$$$Napa Valley, California
Hotel day spa atop the Archer in downtown Napa with a water deck, fitness studio access and treatment rooms; reservations required.
$$$