Los Angeles, California
Four Seasons hotel spa in Beverly Hills with a steam room, rooftop pool, fitness center and eight treatments, open daily, day passes available.
$$$$
Spas with solo travelers
4 spas match
ZaSpa Houston Museum District
Hotel SpaHouston, Texas
Hotel spa at Hotel ZaZa in Houston's Museum District, with massages, body treatments, infrared saunas and day-pass access to the pool lounge.
$$$Aranyam River Retreat
Resort SpaRishikesh, Uttarakhand
An upscale riverside resort 18 km outside Rishikesh with an in-house spa, yoga studio and restaurant, open only to overnight guests by reservation.
$$$Walliser Alpentherme & Spa Leukerbad
Hotel SpaLeukerbad, Valais
Thermal baths inside a 19th-century hotel in Leukerbad, Valais, with mineral-rich pools open daily from 9am to 8pm.
$$$
