The famous national park known for its geysers is Yellowstone National Park. Located primarily in Wyoming but extending into Montana and Idaho, Yellowstone was established as the first national park in the United States in 1872. It is renowned for its geothermal features, particularly the iconic Old Faithful geyser, which erupts regularly, drawing thousands of visitors each year. Besides geysers, the park is home to diverse wildlife, beautiful landscapes, and stunning hot springs, making it a significant natural treasure and a UNESCO World Heritage Site.