The Adirondack Park is a publicly protected, elliptical area encompassing much of the northeastern lobe of Upstate New York. It is the largest park and the largest state-level protected area in the contiguous United States, and the largest National Historic Landmark.
The park covers some 6.1 million acres (2.5×106 ha), a land area roughly the size of Vermont and greater than the National Parks of Yellowstone, Yosemite, Grand Canyon, Glacier, and Great Smoky Mountains combined.