In Window Rock, Arizona, the Navajo Nation Museum and its associated library serve as a major center for preserving Navajo history, language, and culture on Navajo land. Established in 1961 and expanded through later moves before opening its current building in 1997, the institution holds extensive artistic, ethnographic, archaeological, and archival collections, including more than 40,000 photographs. Its exhibitions explore Navajo life and major historical experiences such as the Long Walk and Fort Sumner, while its research materials support scholars and publishers. The museum has also advanced language preservation through Navajo-language film projects, making it an important cultural memory institution for the Navajo Nation.