Aztec Ruins National Monument is open 8:00 a.m. to 5:00 p.m. most of the year and 8:00 a.m. to 6:00 p.m. Memorial Day through Labor Day. The park is closed Thanksgiving, December 25th, and January 1st.
Did You Know?
President Warren G. Harding designated Aztec Ruins a national monument in 1923 in order to preserve the site "for the enlightenment and culture of the nation."