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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

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 1125 reviews
  • #2 of 9 things to do in Oracle
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Day Trip from Phoenix

My husband and I are over 70 and found the Biosphere very interesting. They warned us it may be difficult walking and we would travel a distance of 1 + miles but it is an easy walk. I think young...

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An interesting testament to flawed science

It's more than a bit off the beaten path, being an hour or so from the Tucson airport. It's definitely something that's worth seeing if you're in the area, though. The grounds are kept well by the...

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Enjoyable and educational

We took all three tours, which made for about 4 hours non-stop, including walking back up to the top between the general and history tours. The ideal plan would be to get there early enough to start...

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  • Wheelchair Accessible

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