… was formed on this date in 1950 by combining the much smaller National Park established in 1929 (which included just the Tetons and the lakes) and the Jackson Hole National Monument established in 1943. From the National Park Service:
Located in northwestern Wyoming, Grand Teton National Park protects stunning mountain scenery and a diverse array of wildlife. The central feature of the park is the Teton Range — an active, fault-block, 40-mile-long mountain front. The range includes eight peaks over 12,000 feet (3,658 m), including the Grand Teton at 13,770 feet (4,198 m). Seven morainal lakes run along the base of the range, and more than 100 alpine lakes can be found in the backcountry.
Elk, moose, pronghorn, mule deer, and bison are commonly seen in the park. Black bears are common in forested areas, while grizzlies are occasionally observed in the northern part of the park. More than 300 species of birds can be observed, including bald eagles and peregrine falcons.