Yellowstone National Park is most popular and experiences its highest density of visitors in the Old Faithful area and the Grand Canyon of the Yellowstone. Old Faithful is the iconic heart of the park, famous for its predictable geyser eruptions that draw thousands of spectators to the viewing boardwalks every hour. Nearby, the Midway Geyser Basin, home to the vibrant Grand Prismatic Spring, is another massive draw due to its surreal colors and scale. The Grand Canyon of the Yellowstone, particularly the Artist Point lookout, is the most photographed natural feature after the geysers, offering dramatic views of the Lower Falls. Geographically, the park is most "popular" along the Grand Loop Road, specifically the western and southern sections which are most accessible from the West Yellowstone and South entrances. While the Lamar Valley is a favorite for wildlife enthusiasts seeking wolves and grizzly bears, the vast majority of the park's millions of annual visitors concentrate their time in these developed thermal basins and canyon overlooks.