Spas with reservation required in North Carolina

A Cary float center offering sensory-deprivation tank sessions and an oxygen bar, with a 60-minute float running $89.

Single-purpose float spa in North Raleigh offering 60-minute sensory-deprivation pod sessions, open daily with walk-ins accepted.

A moderate-priced day spa in Charlotte's SouthPark area with a sauna, steam room and thermal pool alongside massage, facial and body-treatment menus.

A North Raleigh day spa specializing in the Kranial Flush, a scalp and cranial treatment, alongside body work, face and hair therapy.