Carrollton

This mini chain of mega spas offer something called Sauna Valley: You'll find every conceivable temple—gold, Himalayan Salt, infrared, far infrared, color therapy—and an equal number of pools to match. The Texas outpost is open twenty-four hours a day, while the Queens location is open from 6 a.m. to midnight, making this a fun pilgrimage (and a good girls activity). There's an on-site cafeteria, and even a kiddie pool.