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Biosphere 2

32540 S Biosphere Rd, Mile marker 96.5, Oracle, AZ 85623-7019
+1 520-838-6200
Review Highlights
Its Own Little World - Amazing!

My wife and I were visiting Biosphere2 with my sister's family and they had two little ones so we... read more

Reviewed 1 week ago
Stuart Y
San Antonio, Texas
Amazing, educational, and very interesting-spend a whole day if you can.

We knew some things in general about Biosphere before we went there but had a lot to learn. It was... read more

Reviewed 1 week ago
Spokane, Washington
Read all 903 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” (46 reviews)
“guided tour” (85 reviews)
Closed 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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Reviews (903)
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1 - 10 of 879 reviews

Reviewed 1 week ago

My wife and I were visiting Biosphere2 with my sister's family and they had two little ones so we opted for the family tour and arrived just a few minutes before the tour began. We must have gotten a new admittance clerk because she didn't...More

Thank Stuart Y
Reviewed 1 week ago

We knew some things in general about Biosphere before we went there but had a lot to learn. It was originally designed to see if people can be self-sufficient including water, air, and food in a sealed environment (like a colony on Mars). The neat...More

Thank jlrmac
Reviewed 2 weeks ago via mobile

Very friendly tour guide with an amazing experience. It's really worth it to visit and learn about the ecosystem we live in. Check out the falaj (water system donated by the Sultan of Oman) at the end and NASA video about Mars.

Thank Mohamad H
Reviewed 2 weeks ago

Loved this!!! An absolute marvel of engineering and imagination and most of all EVIDENCE there are still smart, compassionate and very interesting people in the USA! Went on the guided tour - which is required of the working area, and also walked around the open...More

Thank bcaz2016
Reviewed 3 weeks ago via mobile

My wife and I really enjoyed learning about BS2 and spent some time after reading about the political and financial drama as well. Even Steve Bannon's name comes up.

Thank Flag_AZ_Snow_Country
Reviewed 12 September 2017

Note I didn't say elderly, not that they wouldn't appreciate it, but there is a great deal of walking, stairs, and indoor/outdoor temperature changes, so please be forewarned. I don't believe children would find this location very interesting unless they were on a field trip...More

Thank Mwindaji19
Reviewed 7 September 2017

Had free passes from my wife's work so took the drive down from Phoenix to satisfy our courousity. Site was interesting with a small tour and explain nation of the experiment. Also some new experiments going on that we're unique. All in all on ok...More

1  Thank Beaches1
Reviewed 28 August 2017 via mobile

Biosphere 2 is definitely worth a visit. It was an amazing experiment completed in the early 90s to replicate the environment necessary for humans to live in space. Biosphere 1 is the earth; hence the name Biosphere 2 for the replica that was privately funded....More

1  Thank Scullyster
Reviewed 25 August 2017

Great place for kids to learn about our environment. Our tour guide was very informed and did not mind questions. We learned so much! The kids loved being blown out the windy door lol! I loved the rainforest and the beautiful plants.My husband loved seeing...More

Thank Jennifer S
Reviewed 21 August 2017 via mobile

Lots to learn and great tour guides. Very knowledgeable and didactic explaining everything New studies currently being co ducted studying droughts. Incredible experience Lots of walking and climbing to be done. Caution! Not for walking impaired or sick

Thank diana M
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Questions & Answers
Donald T
18 October 2017|
AnswerShow all 8 answers
Response from WMSCV | Reviewed this property |
Bonnie L
11 October 2017|
AnswerShow all 10 answers
Response from Bruce L | Reviewed this property |
There is a fair amount of walking and there are stairs but for the most part they are only a single flight. As I recall it was mostly level however be aware there are some up and down slopes to walk but not very bad For... More
6 July 2017|
AnswerShow all 8 answers
Response from Graceracer | Reviewed this property |
You don't need reservations. I'm not sure if there is a price difference but if you are going, you need to take the tour to see most of the biosphere. Without the tour you will only see a fraction of the biosphere. It's a... More