In 1890.
Theodore Roosevelt.
National is an adjective; monument is a noun.
For over 103 years. It was declared a U.S. National Monument on December 8, 1906.
105 years old since it was declared a national monument
Congress passed a bill making it a national park. Before that it was a national monument.
Petroglyph National Monument was created in 1990.
February something.
Benjamin Harrison.
The Washington Monument
The Giant Sequoia National Monument comprises 328,315 acres of California's Sequoia National Forest. It was designated a National Monument in April 2000.
Grand Canyon
george washingtons birthday