The Best New Wellness Retreats Around the World for 2024

"When Murietta Hot Springs opened in 1902, it quickly became the respite of choice for southern Californians. The storied resort located between L.A. and San Diego re-opened in February after a 30-year-closure and history is certain to repeat itself thanks to re-imagined facilities, including a spa that focuses on traditional hydrothermal treatments, a wine bar and restaurants, plus a fitness center that offers creative classes like aqua sound bathing. A steam room, panoramic sauna, cold plunge, and terra thermal mud loft are housed in the historic bathhouse. But the steamy, mineral-rich waters remain the main draw. More than 50 geothermal pools, cold plunges, and water features are scattered across the 46-acre property. Day passes are available, but overnight guests get 24-hour hot springs access and can upgrade to specially designed Sleep Rooms with Bryte Balance beds and ambient soundscapes machines. Essential experience: After a soak, hit the spa for a super hydrating honey-avocado body treatment."