Located on Mount Wilson, a 5,710-foot peak in the San Gabriel Mountains near Pasadena, California, the Observatory was conceived and founded by George Ellery Hale in 1904. The home of some of the most important telescopes in the development of modern astronomy - including the two largest telescopes of their time - it is a site of significant scientific and Los Angeles history. The Observatory and grounds are open to the public to visit, and during the spring and summer hosts public programs including observing through the historic telescopes, lectures, concerts, educational programs, and more.


Explore the history, science, and technology of Mount Wilson Observatory
Weekend Public Tours | Engineering Tours | Private Tours | Self-Guided Tours | Virtual Tour


Concerts, lectures, public telescope nights, & more!
Concerts in the Dome | Talks & Telescopes | Arts @ the Observatory | All Events


For an experience of a lifetime, view celestial objects through our historic 60-inch or 100-inch telescopes.
Telescope Reservations | Solar Observing | Public Ticket Nights


Conceived & founded by George Ellery Hale in 1904, the observatory is home of some of the most important telescopes in the development of modern astronomy.
Our Founder | Our History | Mount Wilson Astronomers | Reflections Newsletter


Join us on the Mountain! There are a wide range of activities and events, including telescope viewingsengineering tours,  concertsastronomy lectures, and art events! Check them out below, sign up for a few, and come explore our beautiful Observatory campus.

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The mission of the Mount Wilson Institute is to manage & promote the Mount Wilson Observatory for scientific research, historic preservation, education, public engagement, and the arts. Your generous support keeps our mission alive!
Donate | Become a Member | Volunteer | Shop


Our Education programs are led by astronomers from world-renowned institutes. Students learn, at any level, about the astrophysics that led Hubble to discover the expanding Universe.
Grades 4-12 STEM Program | Adult Summer Observational Astrophysics Retreat

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