Visit a working observatory! Lowell Observatory is a private, non-profit research institution founded in 1894 by Percival Lowell. One of the major astronomical research facilities in the United States, Lowell Observatory is also a Registered National Historic Landmark. The observatory's original 24-inch Alvan Clark Telescope is still in use today for research and public education.
Lowell is open seven days a week (except for major holidays) and offers guided tours, widescreen multimedia shows, tours of the Universe in the 3-D space theatre, and opportunities to view the sky through the Alvan Clark Telescope. See Jupiter, the Moon, star clusters, and more—all while enjoying the clear mountain air and dark skies over Flagstaff.