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  • All-Day Access To The Observatory

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1400 West Mars Hill Rd

Flagstaff AZ, 86001


See Hours


General Admission



  • Historic campus
  • Exhibits & science demos
  • Constellation tours
  • Daily science talks
  • Stargazing

Get all-day access to 128 years of astronomical discovery at Lowell Observatory.

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Explore the Observatory

Plan Your Visit

The Giovale Open Deck Observatory features six advanced telescopes that collectively give you a viewing experience that goes far beyond seeing faint smudges of light.

Upcoming Events

February 4 @ 9:30 am

Science Saturday | Earth and Planetary Science

Off-Site Event

February 16 @ 6:00 pm

I Heart Pluto Festival | Cheers to Pluto! Special Astronomy on Tap at Mother Road

Off-Site Event

February 17 @ 6:00 pm

I Heart Pluto Festival | Pluto Pub Crawl

On-Site Event

February 18

I Heart Pluto Festival - Day 1

Off-Site EventOn-Site Event

February 18 @ 10:00 am

I Heart Pluto Festival | VIP Tour

On-Site Event

February 18 @ 12:30 pm

I Heart Pluto Festival | Unveiling the 9" Tombaugh Telescope

Off-Site Event

February 18 @ 6:00 pm

I Heart Pluto Festival | Night of Discovery with Astronaut Nicole Stott

On-Site Event

February 18 @ 7:00 pm

Meet An Astronomer

On-Site Event

February 19

I Heart Pluto Festival - Day 2

On-Site Event

February 19

I Heart Pluto Festival - Day 3

Virtual Event

February 19 @ 7:00 pm

I Heart Pluto Festival 2023 | Livestream with Dr. Alan Stern

On-Site Event

February 19 @ 8:00 pm

2023 I Heart Pluto Festival | Science Talk with Dr. Will Grundy

Worlds Revealed

Lowell Observatory has been making history beneath the awe-inspiring dark skies of Flagstaff, Arizona, for over 125 years. Experience the past, present, and future of astronomy firsthand.

Walk in the footsteps of prolific figures such as our founder Percival Lowell, Pluto discoverer Clyde Tombaugh, the astronauts of the Apollo Program, and numerous others. History is made every day by our brilliant team of researchers, and discovery awaits you, too. Look through our historic and cutting-edge telescopes yourself to see our universe like you’ve never seen it before.

Plan Your Visit

Step back in time

Percival Lowell at the Historic Clark Refractor Telescope.

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