On January 11, 1908 Theodore Roosevelt makes Grand Canyon a national momument.
Though Native Americans lived in the area as early as the 13th century, the first European sighting of the canyon wasn't until 1540, by members of an expedition headed by the Spanish explorer Francisco Vasquez de Coronado. Because of its remote and inaccessible location, several centuries passed before North American settlers really explored the canyon. In 1869, geologist John Wesley Powell led a group of 10 men in the first difficult journey down the rapids of the Colorado River and along the length of the 277-mile gorge in four rowboats.In January 1908, Roosevelt exercised this right to make more than 800,000 acres of the Grand Canyon area into a national monument. "Let this great wonder of nature remain as it now is," he declared. "You cannot improve on it. But what you can do is keep it for your children, your children’s children, and all who come after you, as the one great sight which every American should see.