Find a Hotel

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 1171 reviews
  • #2 of 10 things to do in Oracle
  • Show Reviews

Awesome place

Found the biosphere very interesting, tour group was small in size and staff friendly and very informative. Made me want to find more information about the 2 year isolation stay that took place at...

Read full review


Don't feel bad if you miss this place. -- It's just weird, and if I weren't with a friend who really wanted to go, I would have skipped it. I recommend reading about its history on Wikipedia, if you...

Read full review

Dont miss it! Well worth a side trip from Tucson or Phoenix.

Though far off the beaten track, this University of Arizona science park deserves your attention. From the largest indoor rain forest, to the largest indoor ocean, to a mangrove swamp, and chaparral...

Read full review


  • Wheelchair Accessible

See More

Meeting Facilities

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

Tour Inside