Yoga classes on stand-up paddleboards are standard resort fare in summer time, but this Utah winter-sports hub - including the Canyons and Deer Valley ski areas- may be the only mountain destination to offer them year-round. Homestead Crater, the town's 10,000-year-old mineral dome, has a geothermal hot spring sheltered by soaring limestone walls. Inside, visitors can take daily paddleboard yoga classes offered by Park City Yoga Adventures, and then hit the miles of Park City's hiking trails to watch the landscape's transformation from white to green.