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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



  • Green Business
  • Mexico Ready

838-6200, off AZ Hwy. 77 (Oracle Rd.), near Oracle, AZ. $20.00/adults, $13.00/children 6–12, 5 and younger free. 9 a.m.–4 p.m. Allow two hours. Biosphere 2 was recently named by Time Life Books as one of the 50 must see "Wonders of the World". Biosphere 2 was originally designed as a prototype for space colonization; it now houses real time earth science and research along with a visitor center that has movies, exhibits, cafe and bookstore. Open daily!

  • TripAdvisor Traveler Rating
    Based on 1152 reviews
  • #2 of 10 things to do in Oracle
  • Show Reviews

Unique building and science lab

I read about Biosphere 2 when I was in high school. It was being featured in a local science magazine as it was being built. So I was happy to be able to visit on our road trip we got in and took the...

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Fun and educational way to spend an afternoon

Took an afternoon tour of Biosphere 2 while in Tucson. After hearing about it all those years ago it was very interesting to actually take a tour of the place. It's definitely worth the time and...

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So much to learn and explore!

Great tour! Very thorough and absolutely worth the price of admission. Our tour guide was knowledgeable and enthusiastic. They also use a great audio system on the tour. Everyone gets headphones that...

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  • Wheelchair Accessible

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Meeting Facilities

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