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Biosphere 2–The University of Arizona

Located in: Pinal County


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

Phone: 520-838-6200

Fax: 520-838-6162

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  • Green Business
  • Mexico Ready

Visit Biosphere 2 today and find out why Time Life Books named it “One of the 50 must-see wonders of the world!” Three New Themed Tours take you inside the world's largest living research center focused on future life of our planet. Experience the new "Under the Glass" classic, amazing "30 Year History" or engaging "Family " tour.  Highlights of this immersive experience include a new feature movie, multi-media exhibits and a uniquely built indoor trail system with your tour led by a knowledgeable guide. Biosphere 2 is the size of 3 football fields and has a $200 million dollar replicated mini-world.  Beneath 6,500 panes of glass lives a rainforest, million gallon ocean, coastal fog desert, technology grid and much more.  Located at a very scenic cool elevation of almost 4,000 feet at the base of the Tucson Catalina Mountains. Check out our Bookstore & Cafe. Just 20 minutes north of Tucson and 90 minutes south of Phoenix.  Guided adventure tours offered daily! Visit or call (520) 621-4800 OPEN DAILY 

  • TripAdvisor Traveler Rating
    Based on 1028 reviews
  • #2 of 9 things to do in Oracle
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Learn about our environment

Biosphere 2 is alive and well..This is a fascinating attraction. Good facilities and excellent tour guides.

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Phenomenal Experience

While visiting Tucson we decided to tour the Biosphere and I am so glad we did. The experience really reminded of us of how important our world is. Our tour guide Anita was very professional and...

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Much better then I expected, wow

I'm visiting my Uncle and he had gone many times and loves it. This was my first time and I loved it. The short video at the beginning was nice. The earphones they give you to easily hear the guide...

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  • Wheelchair Accessible

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