Yellowstone National Park.

Yellowstone National Park, established in 1872, spans nearly 9,000 km² across Wyoming, Montana, and Idaho, making it a premier destination for nature enthusiasts. It boasts over 10,000 geothermal features, including the world’s largest concentration of geysers—more than 300—including Old Faithful and the towering Steamboat Geyser. Sitting atop a dormant supervolcano, these features are powered by a partially molten magma body. The park’s diverse landscapes range from rugged mountains and deep valleys to expansive lakes, with Yellowstone Lake being the largest high-elevation lake in North America. Home to rich ecosystems, it provides habitat for iconic wildlife like grizzly bears, wolves, and bison, drawing millions of visitors each year to experience its stunning beauty and unique geological wonders.