Canyon de Chelly National Monument in northeastern Arizona preserves an archaeological landscape within the Navajo Nation that has been continuously inhabited for centuries. Established in 1931, it includes the floors and rims of three canyons and contains ruins of earlier Indigenous peoples, including the Ancestral Puebloans, as well as long-standing Navajo communities, with about 40 families still living there. Its significance lies in this rare continuity as both historic site and living homeland, its unusual cooperative management under Navajo ownership, and its landmarks and dwellings that reflect deep cultural traditions. The canyon also bears the memory of major attacks on the Navajo in 1805 and 1863.