The natural magnificence of the United States is stupendous, and many of these hotels invite you to immerse yourself in wilderness. Restore your perspective in a spectacular private treehouse fifty feet up a giant cedar in the heart of Mount Rainier National Park, or come back to earth in your own lakeside cabin in Wisconsin designed by a disciple of Frank Lloyd Wright. Experience Old World gentility in the Renaissance palazzo of Wheatleigh, amid the steeples and clapboard farmhouses of New England, where an immaculate makeover has restored the grace and understated privilege of the world of Edith Wharton (and added all the discreet modern luxuries you might require). Or live out your Rat Pack fantasies as you lounge poolside with a cocktail surrounded by mid-century modern classics—furniture by Bertoia, Eames, Saarinen—in an authentic 1950s motel in Palm Springs.