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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 1017 reviews
  • #2 of 9 things to do in Oracle
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Thought-provoking and fun

Biosphere is quite interesting, and educational regarding the effects of climate change. Makes one ponder just how fragile the ecosystem is and how much we have to lose if we don't pay attention to...

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Science At It’s Best!

This tour is absolutely amazing! It’s with the $20. I remember when the scientists went into lock down within the facility. I hadn’t realized they spent most of their time farming. I left wanting...

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Amazing place

Had the rare opportunity to visit Biosphere 2, near Tuscon Arizona in May 2018. This amazing "Dome" and research facility is a must see for everyone, young and old, as well as student or...

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  • Wheelchair Accessible

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