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Biosphere 2

32540 S Biosphere Rd, Mile marker 96.5, Oracle, AZ 85623-7019
+1 520-838-6200
Review Highlights
It's fun to see how it has evolved.

I visited biosphere 2 when the crew was living in it, and later, shortly after they left. It was... read more

Reviewed 4 days ago
Alta Loma, California
Absolute must-visit for anyone interested in science

Worth the drive. A futuristic place. I strongly recommend getting the guided tour. Got to visit all... read more

Reviewed 1 week ago
T Alexander L
Read all 920 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” (87 reviews)
Closed Now
All hours
Hours Today: 09:00 - 16:00
Suggested Duration: 2-3 hours
32540 S Biosphere Rd, Mile marker 96.5, Oracle, AZ 85623-7019

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1 - 10 of 895 reviews

Reviewed 4 days ago

I visited biosphere 2 when the crew was living in it, and later, shortly after they left. It was fun to see it now that the University of Arizona has made it a research facility for the change of ecosystems under controlled conditions. The tour...More

1  Thank SLSBrown
Reviewed 1 week ago

Worth the drive. A futuristic place. I strongly recommend getting the guided tour. Got to visit all the different biomes, and the very cool "technosphere" underground making the world's biggest earth science experiment possible. Incredible experience.

Thank T Alexander L
Reviewed 1 week ago

I wasn't sure what to expect when we planned to go to the Biosphere but the reviews were so good we thought it was worth trying the experience. We were not disappointed! The scale of the project is incredible and the tour takes you from...More

1  Thank Berniejank
Reviewed 2 weeks ago

Didn't know much about this before going. After taking the tour and thinking about it, this place is freaking amazing. Even more amazing to think people lived in it for 2 years! Well worth touring if you have the chance. However, getting there from just...More

1  Thank luv2travel074
Reviewed 2 weeks ago via mobile

I remember when the folks entered into the Biosphere 2 so it was really interesting to see it. Our teenagers are too young to know much about it at all but still found the site to be interesting and intriguing. We were also accompanied by...More

Thank Heather T
Reviewed 2 weeks ago via mobile

My husband and I went here while staying at Loews Vantana Canyon resort. It was about a 1 Hour drive up to Biosphere 2 and worth it. The tour guides were really good and know a lot. It was funny - pretty early in she...More

Thank JudyAC
Reviewed 3 weeks ago via mobile

We had children 3,12, 11. It was not interesting for them. Take the tour. It is of course all about science and at a fairly high level. The concept and the planning for this experiment is intriguing and something to marvel at. A lot of...More

Thank rockcole
Reviewed 3 weeks ago via mobile

My kids were a little bored but it was still interesting. I’m happy I get to cross this off my bucket list.

Thank Maritza C
Reviewed 4 weeks ago

We experienced an informative guided tour of Biosphere 2 featuring different climates. It was very educational but expensive. Lots of up and down stairs as well. Would not recommend it for the faint of heart. But a short drive from Happy Cactus Oro Valley and...More

1  Thank John W
Reviewed 4 weeks ago

This started a long time ago as an experiment to see if people could live in a closed system for two years. The thought was that they would be able to be completely self-sufficient, but the rumor was that it did not succeed, or at...More

Thank travelwriter52
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Questions & Answers
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.
Bonnie L
10 October 2017|
AnswerShow all 11 answers
Response from Jennifer S | Reviewed this property |
yes many steps and I had a cane. I would not recommend with copd