Grand Teton National Park is a United States National Park in northwestern Wyoming. At approximately 310,000 acres, the park includes the major peaks of the 40-mile-long.The Teton Range is a mountain range of the Rocky Mountains in North America.

A north-south range, it is mostly on the Wyoming side of the state’s border with Idaho, just south of Yellowstone National Park. Most of the east slope of the range is in Grand Teton National Park