Nothing man-made can rival Mother Nature at her finest. For those who love the great outdoors, the most memorable vacations aren't at massive mega-resorts -- they're at hotels that bring you closer to some of the world's natural wonders. From an historic landmark hotel in Yosemite National Park to a lodge at the top of a massive waterfall to luxury tree houses nestled among California's redwoods, these 10 hotels have natural settings that are truly jaw-dropping. Nestled deep among the pine trees, cliffs, and canyons of Yosemite Valley is the 123-room Ahwahnee Hotel. This impressive structure was built out of stone, concrete, and timber in 1927 and is considered a National Historic Landmark. Rooms, with views of the Half Dome and El Captain summits, are filled with wooden accents and rich tapestries of Native American design.