Lowell Observatory

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1400 W Mars Hill Rd
Flagstaff, AZ 86001
Lowell Observatory, located in Flagstaff, Ariz., is a privately owned astronomical research institution. The observatory was founded in 1894 by Percival Lowell, a Boston mathematician. Best known for the discovery of Pluto, Lowell Observatory is also where astronomer V.M. Slipher gathered the first evidence that the universe is expanding. Each year, more than 70,000 people visit the observatory to learn about astronomy by participating in multimedia programs, private and school programs, special events, and other educational activities. The observatory features a regular program of telescope viewing. Lowell Observatory s library has a wide collection of biographies and bibliographies, historical logbooks, manuscripts, working paper, research contracts and historical photographs.

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4.0287 reviews
Photo of Joyce T.
Joyce T.
11/28/2025

Visited at 7pm on Black Friday, it's pretty crowded. Driving up to the hilltop, you can see the pretty city's night lights. We went for the live constellation show at the Dark Sky Planetarium, it...

Photo of Mark C.
Mark C.
11/4/2025

Even if you don't have a major interest in astronomy, there is a lot to learn here about how vast our universe truly is. Having now visited the place, I now feel that I wish I could go back in...

Photo of Chiamaka N.
Chiamaka N.
10/22/2025

The Lowell Observatory is a cool place to visit if you're into astronomy! Came here to checkout the rooftop "Star Gazing Tour" and it was okay - for some reason I thought it would've been more...

Photo of Emily S.
Emily S.
9/23/2025

The staff at the Lowell observatory are so incredibly knowledgeable! It's amazing how much information they have and how well-versed in astronomy they are! I've been here twice and saw different...

Photo of Winchelle R.
Winchelle R.
10/23/2025

Came here on a school field trip and could not have been more impressed by the staff, the cleanliness of the entire observatory and how cool it is! Definitely impressed.

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