In a controversial move that inspires charges of Eastern domination of the West, Congress establishes Grand Teton National Park in Wyoming.

Home to some of the most stunning alpine scenery in the United States, the territory in and around Grand Teton National Park also has a colorful human history. The first Anglo-American to see the saw-edged Teton peaks is believed to be John Colter. After traveling with Lewis and Clark to the Pacific, Colter left the expedition during its return trip down the Missouri in 1807 to join two fur trappers headed back into the wilderness. He spent the next three years wandering through the northern Rocky Mountains, eventually finding his way into the valley at the base of the Tetons, which would later be called Jackson Hole.

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On this day in 1919, President Woodrow Wilson officially designated the Grand Canyon as a national park. The geological wonder would go on to become one of America’s most popular tourist attractions. Located in northwestern Arizona, the Grand Canyon is the product of millions of years of excavation by the mighty Colorado River. The chasm runs exceptionally deep, dropping more than a mile into the earth, and is 15 miles across at its widest point. The canyon is home to more than 1,500 plant species and over 500 animal species, many of them endangered or unique to the area, and its steep, multi-colored walls tell the story of two billion years of Earth’s history.

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