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Biosphere 2

32540 S Biosphere Rd, Mile marker 96.5, Oracle, AZ 85623-7019
+1 520-838-6200
Review Highlights
BIOSPHERE 2---An AZ Phenomenal Attraction!

8 dedicated scientists involved in re-creating an Earth environmental atmosphere for the purpose... read more

Reviewed 3 days ago
alan a
Interested in climate change? This is for you!

Our tour guide Sandra was SO INFORMATIVE and the climate research that is being done there is not... read more

Reviewed 5 days ago
Denver, Colorado
via mobile
Read all 935 reviews
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Visitors can observe nature in a controlled state at this world-famous steel and glass research center where desert, forest, ocean and other ecosystems are monitored and studied.
  • Excellent46%
  • Very good33%
  • Average15%
  • Poor4%
  • Terrible2%
Travellers talk about
“living quarters” (48 reviews)
“guided tour” (89 reviews)
Open Now
All hours
Hours Today: 9:00 AM - 4:00 PM
Suggested Duration: 2-3 hours
32540 S Biosphere Rd, Mile marker 96.5, Oracle, AZ 85623-7019
+1 520-838-6200

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Write a ReviewReviews (935)
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1 - 10 of 908 reviews

Reviewed 3 days ago

8 dedicated scientists involved in re-creating an Earth environmental atmosphere for the purpose of future colonization. A brilliant attempt to witness the probable advantages and potential problems engaging the "Human Factor" living off our planet. Stated as being a very SUCCESSFUL FAILURE---to visit this unique...More

Thank alan a
Reviewed 5 days ago via mobile

Our tour guide Sandra was SO INFORMATIVE and the climate research that is being done there is not only fascinating, but a marvelous antidote to the poison l current president of the US is spewing about the fake news of human contribution to global warming....More

Thank edieann
Reviewed 1 week ago

We live in Phoenix and come down to Tucson regularly for soccer tournaments and have never done this since I thought my kids would find it boring. No way. They loved it! So did I. It was beautiful and interesting and different and educational. Really...More

Thank AimeeLally
Reviewed 1 week ago

Wasn't impressed with Bio2. Having lived in Tucson for over 50 year, we thought we should go see this "must see" attraction. The architecture of course, is impressive. The huge glass structures, the geodesic domes. That was pretty incredible. The research going on there now,...More

Thank Jim G
Reviewed 1 week ago

Interesting to see the different ecological systems enclosed inside this glass house. We took both the "History Tour" and the "General Tour". Lots of walking, lots of steps, lots of uneven surfaces so it is not for the mobility challenged. However for those who can...More

Thank Dale H
Reviewed 2 weeks ago via mobile

I'm sure there is some exciting research going on here, but we didn't hear about it on our dumbed-down tour. It seems as if this historical artifact is struggling to find a reason to exist. The real story here is about why Biosphere 2 happened....More

Thank Waterwalla
Reviewed 2 weeks ago

If there is meaningful current research occurring at this facility, the tour staff are either unaware, or don't understand it well enough to share it with an adult audience. The guide spoke to us as though we were elementary school students and offered dumbed-down descriptions...More

Thank Sherman N
Reviewed 2 weeks ago via mobile

This is a guided tour activity. It is about 1.5 hours. Bathrooms are at the beginning and end. It is walking for almost all of the tour (at beginning there is a video with chairs). There are inclines and stairs throughout the tour. I think...More

1  Thank drmueller07
Reviewed 2 weeks ago

Visited the day after Xmas and it is quite a long drive from Tucson airport which is where we stayed. Personally, I was looking for a fully guided tour but it seems it is a self-guided with certain stops that have guides stand by to...More

1  Thank starofjupiter
Reviewed 3 weeks ago

We visited here on the day after Christmas. The weather was fantastic and perfect for viewing the grounds. The inside of Biosphere was very interesting and the staff was wonderful. My kids were impressed with Biosphere's lung and rainforest. We had a four year old...More

1  Thank AZFamilyFun
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Ask a question
Questions & Answers
21 December 2017|
AnswerShow all 10 answers
Response from Berniejank | Reviewed this property |
There Is a bit of an outdoor walk to get to the entrance of the habitat but once you are inside the temperature will not be an issue. It is regulated and completely cut off from the outside weather. In fact, this is a great... More
Catherine S
4 November 2017|
AnswerShow all 4 answers
Response from bcaz2016 | Reviewed this property |
Our tour guide definitely gave the impression they run many varied programs there with the potential for participation for non scientists. The facility is now the property of the University of Arizona which conducts special... More
Donald T
18 October 2017|
AnswerShow all 11 answers
Response from desertdune_sg | Reviewed this property |
Yes. I think on the tour some of the stairs were grated metal, but I'm not sure. There are also some sloping uphill parts.