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Biosphere 2–The University of Arizona

Pinal County

32540 S. Biosphere Rd.
Oracle, AZ 85623
United States

Phone: (520) 621-4800



The New BIOSPHERE 2 Experience App allows visitors to explore Biosphere 2 and choose your own private adventure!  Never seen before videos and photos that visualize the science and amazing 30-year history of this "Wonder of the World!". Through exciting stories and interviews you'll have the opportunity to learn more about our world-class environmental research. Your walking tour includes a safe (socially distanced) one-way path around the Biosphere 2 exterior, and finally into and under the glass of the reopened portion of Biosphere 2 itself! Please purchase online ticket in advance. Open Daily / / 520-621-4800.Visit today Just 30 minutes North of Tucson.


  • TripAdvisor Traveler Rating
    Based on 1244 reviews
  • #2 of 13 things to do in Oracle
  • Show Reviews

Great experience even without an in-person guide. Be prepared to sweat a lot

We did the self-guided walking tour, which is the only way to currently tour the site, and requires the installation of an app. Although an in-person guide would probably provide a more in-depth...

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Interesting visit

Enjoyed our visit to Biosphere2. The staff was very friendly and helpful. Interesting learning about the creation of the Biosphere2 and its current work. Lots of interesting plants in the different...

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Not just a glass house! Must see!!!

20/10! This experience was incredible!!! Seeing the facilities that once housed the team in pursuit of preservation was amazing, but knowing that research continues to improve the Earth health by...

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  • Wheelchair Accessible
  • Website Listing Tag(s): Oro Valley/Oro Valley

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Health and Safety Protocols

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Meeting Facilities

  • Number of Meeting Rooms 2
  • Largest Meeting Room 1862
  • Banquet Capacity 120

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