America's Best 24-Hour Hot Spots

Wilshire Spa, Los Angeles

Before entering this traditional Korean spa in K-Town, patrons must check their self-consciousness at the door. While some may balk at the thought of baring it all in front of strangers, the rejuvenating effects of the spa’s baths and signature Korean full-body scrub are worth the embarrassment. (It has separate facilities for men and women.)

What to Do at 3 a.m.: Go now if you want to avoid crowds, or if you need to detox after a night of heavy drinking.