Old Administration Building - Bryce Canyon National Park - was created in 1933.
Chaco Canyon National Monument was created in 1907.
Walnut Canyon National Monument was created in 1915.
Bryce Canyon National Monument was created in 1923.
Somoto Canyon National Monument was created in 2005.
Grand Canyon Park Operations Building was created in 1929.
Grand Canyon National Park was created on 1919-02-26.
Canyon de Chelly National Monument was created in 1931.
Leslie Canyon National Wildlife Refuge was created in 1988.
Grand Canyon-Parashant National Monument was created in 2000.
Kings Canyon National Park was created on 1940-03-04.
Black Canyon of the Gunnison National Park was created on 1999-10-21.
Red Rock Canyon National Conservation Area was created in 1967.