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Biosphere 2 - University of Arizona

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

There's only one Biosphere 2! Experience Biosphere 2 and find out for yourself why Time Life Books named it “One of the 50 must-see wonders of the world!” Visitors from around the world journey here to explore Earth's largest living research center studying the environment and the future of our planet. A uniquely built indoor trail system allows visitors to explore the tropical rainforest, savanna, coastal fog desert and million-gallon ocean -- all within Biosphere 2’s 6500 panels of glass! Knowledgeable tour guides take you on this adventure and present the history, current programs, research and unprecedented vision using this engineering marvel. Also, don't miss our feature films, multimedia displays, bookstore and cafe. Check out our new “What IF you could see tomorrow?” programs every Saturday along with many other events listed on our website activities calendar. Biosphere 2 is open daily; call or visit our website for hours and rates!

  • TripAdvisor Traveler Rating
    Based on 837 reviews
  • #1 of 8 things to do in Oracle
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Very Interesting

You should check out this experience. Our guide was one of the many scientists involved in this project so he had a vested interest in telling all about the building and their experiments. The tour...

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Educational fun

Cool, educational fun. Indoor rainforest with over 90 plant species is just one of many fascinating facts you'll learn about this place. I found the rainforest and the air chamber most fascinating...

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Unique experience worth the drive

A bit of a trek off the beaten path but absolutely worth it. A very unique experience, great on a very hot day as about 85% is inside. Interesting, informative and when you realize that this group...

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  • Wheelchair Accessible

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