Discover Park City, Utah, at Marriott’s MountainSide. With ski-in, ski-out access to the famous slopes, our vacation ownership resort is the ideal choice for couples, families and friends visiting Park City. Take in the mountain views from our resort's heated outdoor pool, energize at the fitness center, see a movie at our theater and discover our kid-friendly resort. MountainSide is a short walk to historic Main Street, assorted shopping and dining opportunities, the Sundance Film Festival venue, and the free Park City shuttle which offers service to multiple parts of Park City area.