Yellowstone National Park, located primarily in Wyoming, is famous for its geothermal features, including hot springs and geysers like Old Faithful.

Yellowstone National Park is renowned for its remarkable geothermal activity. It sits atop a volcanic hotspot, resulting in a high concentration of hot springs, mud pots, fumaroles, and geysers. Old Faithful, perhaps the most famous geyser in the world, is located in Yellowstone. These geothermal features are a major draw for visitors and a defining characteristic of the park. The other parks listed do not have the same level of geothermal activity.