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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 1160 reviews
  • #2 of 10 things to do in Oracle
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4+ for our tour guide Anita

I was in a wheel chair and fortunately there was a previous scheduled accessibility tour that my husband and I were able to join. Anita was very well informed and excited about Biosphere 2 and what...

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A surprising and interesting place of research for the world around us

I had heard of Biosphere 2 but thought it was a place where a historic experiment, where humans tried to live in an isolated environment in preparation for deep space travel took place but ended...

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Amazing Place

Definitely visit if in the area! Knowledgeable guide and fascinating place for those interested in history, science, and human nature. Current projects include rainforest research, solar power...

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  • Wheelchair Accessible

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Meeting Facilities

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