Terme di Relilax Boutique Hotel & Spa, Italy

Located right outside of Venice, Terme di Relilax Boutique Hotel & Spa is most famous for its unique therapeutic thermal water and mud treatments, both of which date back to ancient Rome. These wellness-centric, one-of-a-kind services are said to reduce inflammation and help with anti-aging. The property also features several pools, aromatherapy showers, a sauna, and a Turkish bath, as well as two restaurants and a bar.