Talise Spa at Marsa Al Arab

The Talise Spa sits on the fourth floor of one of Dubai's most theatrical hotels, which means your walk in already involves a crystal ceiling installation and a lobby full of royals grabbing macarons. The spa itself is a full-service retreat with the polish you'd expect from a property at this level. Vogue named it among the 100 Best Spas in the World, and the surrounding excess makes it easy to turn a single treatment into a full day.