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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 1186 reviews
  • #2 of 10 things to do in Oracle
  • Show Reviews

Amazing, fascinating and one of a kind

While this is off the beaten path, it is well worth the drive to see the amazing work that has been done and is being done at the Biosphere 2. The tour which is just over an hour is filled with...

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Excellent Experience

It'll be about 1 1/2 hour drive from Mesa to get to the Biosphere 2 but well worth the drive. Cost of admission is very reasonable, we just did the basic tour which I feel was more than adequate. The...

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It’s about a 90 minute guided tour of the facility. You can then take your time walking around on your own. If you are interested in science and engineering, you will have a wonderful time. Either...

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  • Wheelchair Accessible

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Meeting Facilities

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

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