8th Wonder: Yellowstone Nat'l Park

Yellowstone National Park is America's first national park. Established in 1872, the park stretches primarily across Wyoming and over onto small swaths of Montana and Idaho. In total it is larger than the combined area of Rhode Island and Delaware. The park is home to a variety of wildlife, geysers and hot springs, including the famed Old Faithful. Pictured here is the Sapphire Pool at the Biscuit Geyser Basin. (Norbert Rosing/National Geographic/Getty Images)