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Biosphere 2–The University of Arizona

Located in: Pinal County


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

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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 1091 reviews
  • #2 of 9 things to do in Oracle
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Biosphere 2 is Awesome

My daughter really wanted to see the Biosphere 2 and glad we made time to see it. It did not disappoint. Very interesting. We got a late start traveling and didn't have time to see much more than the...

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An Experiment Extraordinaire

My second visit to this amazing place. It is not a glitzy tourist attraction, now maintained by the University of Arizona. What was accomplished there is amazing. Eight people lived for two years...

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Out of the way out of this world

Great tour, interesting guide and a spectacular exhibit. This is a very interesting exhibit. Truly amazing how this was built and what they attempted to accomplish. Wear good walking shoes.

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  • Wheelchair Accessible

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