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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



  • 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 1223 reviews
  • #2 of 11 things to do in Oracle
  • Show Reviews

The story behind the science.

This is a good experience and I learned about on going studies about our earth habits. We took the Modified Tour for the handicapped. We walked a mile with a lot of breaks. Modified tours are at...

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If I could give this 4 1/2 stars I would. It is an amazing concept and facility is much larger and more complex than I imagined. The 1/2 star would be for the wait to get in, 2 hours in line! It...

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If you love science, don’t miss it!

Biosphere 2 was an awesome experience! It had great tour guides who were extremely knowledgeable and fascinating exhibits. Definitely make sure you book ahead of time and get there early to make sure...

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

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Meeting Facilities

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

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