user rating
3.9 / 5
26 votes
Attractions & Culture

Biosphere 2

32540 S Biosphere Rd, Tucson, Arizona 85739 USA 520-838-6200

  • University
  • Historic Site
  • Science Museum
  • Place of Scientific Interest
  • Tourist Attraction
  • Offbeat Attraction

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  • Independent
  • Credit Cards Accepted
  • Not Wheelchair Accessible
  • No Wifi
  • Free Parking
  • RV Parking
  • Private Parking
  • Restrooms

Biosphere 2 is an Earth systems science research facility owned by the University of Arizona. Its current mission is to serve as a center for research, outreach, teaching and lifelong learning about Earth, its living systems, and its place in the universe. It is a 3.14-acre (12,700 m2)structure originally built to be an artificial, materially closed ecological system in Oracle, Arizona (US) by Space Biosphere Ventures, a joint venture whose principal officers were John P. Allen, inventor and Executive Director, and Margret Augustine, CEO. Constructed between 1987 and 1991, it was used to explore the complex web of interactions within life systems in a structure that included five areas based on biomes and an agricultural area and human living/working space to study the interactions between humans, farming and technology with the rest of nature. It also explored the possible use of closed biospheres inspace colonization, and allowed the study and manipulation of a biosphere without harming Earth's. The name comes from Earth's biosphere, Biosphere 1. Earth's life system is the only biosphere currently known.

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Biosphere 2

32540 S Biosphere Rd
Tucson, Arizona 85739 USA


Your rating:
April 21, 2014

Went here on vacation and it was so fun and interesting. As a biology lover, I enjoyed getting to tour and learn about the amazing ecosystems. I really want to come back and explore more!

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Rated 4.0 August 21, 2014

Had heard stories about biosphere 2 but wanted to see it for ourselves while we were on assignment as a travel nurse in Tucson.
It was amazing! The history, the reinactments, the current use for studying plant life and the facility was truly a sight to behold. If you're ever in the area, take a few hours and see it for yourself - you won't be sorry!

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August 20, 2014

Really enjoyed the tour. Opportunity to learn a lot more about this experiment. Impressive structure and goals. Was a really fun thing to do.

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Rated 4.0 August 12, 2014

When I went here, I was really amazed by its architectural design. And the tour here is very informative and it will really hook your interest.

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Rated 5.0 July 14, 2014

Not an overly huge biology geek so I was overly impressed and absolutely loved this place! It was soo cool to get a guided tour through the entire area and see all of the ecosystems and hear all about the sustainability of earth!

Highly Recommend it!

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Rated 5.0 January 22, 2015

The tour is great! There is so much amazing research happening at this facility. Learning about the human missions was fascinating. Not to be missed!

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February 20, 2014

Can anyone come check it out?

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Joel Schat

Joel Schat in reply to on July 14, 2014

Yup! Anyone can come for a tour!

Rated 3.0 August 20, 2014

It is beautiful, all landscaped with grass, but grass uses tremendous amounts of water to stay green and healthy. They should have designed it with Xeroscape to make it sustainable and not require fresh water sprinklers.

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July 10, 2014

Rather boring, also not self sustaining, or sealed. Continues to be a failed experiment and huge waste of money.

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