University of Arizona Biosphere 2 is an American Earth system science research facility located in Oracle, Arizona. Its mission is to serve as a center …
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4.2/5 · 1,306 reviews
5-star
49%
4-star
23%
3-star
10%
2-star
13%
1-star
5%
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May 3, 2025
I’ve been wanting to visit this site for many years. I found it to be very informative using the tour on the phone app. Quite a bit of time is spent outside getting from building to building so be …Full review by Rena L
Apr 9, 2025
Pretty so-so IMO. A bit interesting, but not worth the 2-hour drive, one-way it took us to get there. Might be okay for a school trip for kids, but not enough interest for adults.Full review by Mike T
Feb 8, 2025
Not really too much of interest. A couple of "domes" with vegetation and a faint reminder of an ocean area. I remember the Biosphere being a big thing 30+ years ago, but after its brief fame it see…Full review by sunhead
I read there a a lot of stairs, are they all at once or scattered through out?
A:
Yes there are stairs but there are also ramps outside of the facilities. You can go from the main welcome area to the Biosphere and if I recall use the ramps and not have to …
Yes there are stairs but there are also ramps outside of the facilities. You can go from the main welcome area to the Biosphere and if I recall use the ramps and not have to use the stairs, which is where most of the stairs are. When we visited a gentleman in a wheel chair participated but went on a separate tour . Inside the facility there were only a few steps at a time for transition. I hope this helps.
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The date and time I want is sold out. Can I purchase tickets onsite?
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We ask that all tickets be purchased in advance of your visit. This allows us to manage occupancy to maintain safe distancing for the safety of our staff and other...
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