One hundred years ago today, President Woodrow Wilson signed the U.S. National Park Service into effect. As a new bureau of the Department of the Interior, its mission was two-part: to make America's natural heritage accessible to all and to preserve it for future generations. Then charged with protecting 35 national parks and monuments, the National Park Service now oversees 412 national parks and monuments spanning 84 million acres across the United States and its territories.
In honor of the centennial, our photo contest community submitted their best national parks shots, ranging from the sweeping sand dunes of California's Death Valley National Park to the star-studded skies of Crater Lake National Park in Oregon and snow-covered peaks of Denali National Park, Alaska. Browse more stunning images here, and submit your own using the tag NPS100.