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Biosphere 2

Closed Now: 9:00 a.m. - 4:00 p.m.
Open today: 9:00 a.m. - 4:00 p.m.
Review Highlights
Closed ecological system

I recall the 2 past missions/experiments and did not know why they failed until this tour. Very... read more

Reviewed 4 days ago
Chicago, Illinois
Thought-provoking and fun

Biosphere is quite interesting, and educational regarding the effects of climate change. Makes one... read more

Reviewed 3 weeks ago
Chicago, Illinois
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Traveller Overview
  • Excellent47%
  • Very good33%
  • Average14%
  • Poor4%
  • Terrible2%
Travellers talk about
“living quarters”(52 reviews)
“guided tour”(93 reviews)
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.
Closed Now
Hours Today: 9:00 a.m. - 4:00 p.m.
See all hours
Suggested duration: 2-3 hours
32540 S Biosphere Rd, Mile marker 96.5, Oracle, AZ 85623-7019
+1 520-838-6200
Reviews (1,016)
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All reviewsliving quartersguided tourresearch facilityself sustainingclimate changeair pressurecolumbia universityearth scienceoriginal purposescientific researchinteresting placecoral reefbehind the scenesself guidedanswer questionsworth the tripunique experience
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1 - 10 of 989 reviews
Reviewed 4 days ago

I recall the 2 past missions/experiments and did not know why they failed until this tour. Very interesting tour. Lots of walking and some stairs. Admission $21.00 adult. Senior and military discount. Tours first come basis. Tours last about 75 minutes.

Thank IllinoisKate1
Reviewed 3 weeks ago

Biosphere is quite interesting, and educational regarding the effects of climate change. Makes one ponder just how fragile the ecosystem is and how much we have to lose if we don't pay attention to climate scientists and continue to fund research. The tour is problematic...More

1  Thank drmargery
jadamsb2, General Manager at Biosphere 2, responded to this reviewResponded 3 weeks ago

Thank you for visiting and taking the time to write down your thoughts about the experience at Biosphere 2. Biosphere 2 is an important laboratory used to better understand the impacts as the climate changes. There are 150 stairs on the tour path,while much of...More

Reviewed 4 weeks ago via mobile

This tour is absolutely amazing! It’s with the $20. I remember when the scientists went into lock down within the facility. I hadn’t realized they spent most of their time farming. I left wanting to learn about how I can build an aquaponics system of...More

Thank Tammy C
jadamsb2, Manager at Biosphere 2, responded to this reviewResponded 4 weeks ago

Hello Tammy, Thank you for visiting and taking your time to write a review, we appreciate it. We hope you visit again in the future to learn more about what is happening at Biosphere 2 but specifically how our ocean research is progressing. Thank you,...More

Reviewed August 21, 2018 via mobile

Had the rare opportunity to visit Biosphere 2, near Tuscon Arizona in May 2018. This amazing "Dome" and research facility is a must see for everyone, young and old, as well as student or professional. The knowledgeable tour guides explained the original concept and basic...More

Thank Chris D
Reviewed August 19, 2018

An interesting place to visit because of the amazing structure, and the history of the venture. Now, it seems a very expensive tourist site. (Million a day to keep in operations? WOW!)More

Thank LibbyLou77
jadamsb2, Manager at Biosphere 2, responded to this reviewResponded August 20, 2018

Thank you for visiting and posting feedback about your experience. The mission of Biosphere 2 is to serve as a center for research, outreach, teaching and life-long learning about Earth, its living systems, and its place in the universe. We work to Catalyze interdisciplinary thinking...More

Reviewed August 12, 2018

This place has a lot of interesting history and is even more interesting to see in person. It's not a Disneyland-type of place. They are sharing the information about the long-term research they are doing. It's an interesting approach to science, trying to re-create parts...More

Thank Steven W
jadamsb2, Manager at Biosphere 2, responded to this reviewResponded August 13, 2018

Hello Steven, Thank you very much for visiting Biosphere 2, taking the time to give us your perspective and feedback. Today the University of Arizona takes advantage of the facility’s unique spatial scale providing a bridge between small-scale, controlled, laboratory-based understandings of earth processes and...More

Reviewed August 9, 2018

Went there last week on a hot summer day. Interesting to see conditions when biosphere was first intended. Now used for experiments by school who maintains it. A very expensive endeavor which is reflected in entrance fee. “ 2 of 5 million dollars annual maintenance...More

Thank mafl13
Reviewed August 6, 2018

We were amazed at the science that is going on at this facility..we remembered the early experiments with a team of scientists locked in the venue, and we were interested to see the various habitats that were enclosed in a series of domes.

Thank chuck21Scottsdale
jadamsb2, Manager at Biosphere 2, responded to this reviewResponded August 8, 2018

Thank you for your feedback and we are pleased to read your visit was memorable. We hope you visit again in the near future, stayed tuned for our New Ocean and Beach Tour scheduled to be available Fall 2018

Reviewed August 1, 2018

First thing- purchased guided tours only. There's some parts you can roam a little alone, but the biggest parts of the facility are restricted access and you can only experience in a tour. It's pretty nerdy, you can only really be fascinated if you understand...More

Thank abrown102
Reviewed July 27, 2018

My 1 year old was crying because it was very hot in the beginning of the tour. We separated from the group and were quickly escorted through the building. I wish they gave the kids tour during the week also. We were only in town...More

Thank sruthp
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Questions & Answers
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February 5, 2018|
AnswerShow all 2 answers
Response from nrretreat | Reviewed this property |
Adults $20 Seniors $18 Military $18 Children ages 6 through 12 $13
January 26, 2018|
AnswerShow all 7 answers
Response from edieann | Reviewed this property |
Reservations aren't required