Below, we've rounded up the most beautiful spas in America that would make for an unforgettable weekend getaway, including a few that even seasoned luxury spa resort connoisseurs haven't been to yet. Sure, you might rush to get there by plane or car-but once you've kicked back in a plush lounge chair, swathed in a buttery-soft robe with a green juice or glass of wine in hand, it's all about self-care from sunrise to sunset. A spa weekend is the sort of quick trip that can straighten out months of stress in just a few days.