Las Vegas' go-big-or-go-home attitude runs from its slots to its spas, which now rival the Dead Sea as the world's favored soaking grounds, W reports. But what separates Sin City from Baden-Baden is the de-emphasis on escaping it all: At these luxury bathhouses, seeing and being seen is equally important as the relaxing bit.
The capital of excess entered the luxury-spa market in 1999 with the opening of the Venetian's 73-treatment-room facility; today, the Strip's hotels wage a silk-pillow fight for the most opulent—and social—spa amenities. Mandalay Bay's Bathhouse boasts a 20-foot Jacuzzi and oversize hot tubs. The Palms and Caesar's Palace boast coed Turkish baths and saunas, respectively.