Just when it seemed that Sin City couldn't get any more decadent, two hotel spas give pleasure seekers another way to indulge—away from the noisy casinos. Located in the Bellagio's just-completed Spa Tower, the Spa & Salon Bellagio (3600 S. Las Vegas Blvd.; 888/987-3456) is a serene retreat two floors above the Strip. Accented with stone and wood, the 65,000-square-foot facility emphasizes the healing properties of water: reflecting pools are carved throughout the space, a meditation room is enclosed by waterfalls, and there's even a "watsu" (water shiatsu) room. Therapies draw upon international traditions (Native American, Japanese, Thai), though some veer toward the bizarre—like the Egyptian Gold Treatment, during which gilded powder is sprinkled over the face and body. Down the Strip, the Bathhouse (3950 S. Las Vegas Blvd.; 877/632-9636) at THEhotel (the retreat within the expansive Mandalay Bay property) lives up to its name and has an equally subtle palette, with clean lines of stone and slate. Guests are encouraged to linger in the hot, cold, and warm pools before treatments, or to sign on for one of the Bathhouse's signature soaks. Spend a good hour in a warm tuband those gambling losses will seem a little less painful.
—Elizabeth Woodson

Bellagio Hotel and Casino

Most know the Bellagio for its public spaces—those fountains performing nightly, the Conservatory with its over-the-top revolving floral displays (don’t miss the Chinese New Year exhibit), and the Bellagio Gallery of Fine Arts. In 2015, Bellagio completed the $165-million-renovation of its nearly 4,000 rooms, a four-year project that culimated in the remodeling of more than 400 suites in its main tower, which overlooks the fountains.