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Biosphere 2

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Address: 32540 S Biosphere Rd, Mile marker 96.5, Oracle, AZ 85623-7019
Phone Number: 800-828-2462, 520-825-1289
9:00 am - 4:00 pm
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Sun - Sat 9:00 am - 4:00 pm

Visitors can observe nature in a controlled state at this world-famous...

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.

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TripAdvisor Reviewer Highlights

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  • 298
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    Very good
  • 117
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  • 22
Worth the drive, worth seeing.

North west of Tucson is Biosphere 2 owned by the University of Arizona. The history of this structure is incredible. Your tour guide will go into detail about when it was built... read more

4 of 5 starsReviewed 4 days ago
Joelle B
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734 Reviews from our TripAdvisor Community

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Showing 715: English reviews
Level Contributor
129 reviews
64 attraction reviews
common_n_attraction_reviews_1bd8 32 helpful votes
4 of 5 stars Reviewed 4 days ago NEW

North west of Tucson is Biosphere 2 owned by the University of Arizona. The history of this structure is incredible. Your tour guide will go into detail about when it was built and it's original purpose. It is earth encased in a glass bubble. It has changed hands several times since the original scientists went in for 2 years without... More 

Thank Joelle B
Level Contributor
36 reviews
15 attraction reviews
common_n_attraction_reviews_1bd8 6 helpful votes
4 of 5 stars Reviewed 2 weeks ago via mobile

First off the journey there is frustrating, I have never seen as many traffic lights and all red on a 33 mile stretch of road! Be prepared for this. However once you reach it and you get your first look you'll be glad you came. There is 2 tours, one self guided and the other guided. I'd recommend you do... More 

1 Thank Stacey K
1 review
common_n_attraction_reviews_1bd8 2 helpful votes
5 of 5 stars Reviewed 3 weeks ago

We visited Biosphere 2 in early September 2016. The weather was beautiful and cooler than Tucson at this 4,000 foot elevation. The grounds were beautifully kept and the facility itself was space-age cool. We had read about the original mission years ago and were curious to experience this history-making place. The tour we received was A+! Our guide's name was... More 

2 Thank Nancy G
Belton, Texas
Level Contributor
81 reviews
33 attraction reviews
common_n_attraction_reviews_1bd8 55 helpful votes
2 of 5 stars Reviewed 3 weeks ago via mobile

If you are really into Biology and science you would like this. Interesting and definitely unique but has drawbacks. Long drive there in a completely urban area with dozens and dozens of stop lights. Lots of ramps and stairs. Not as much to see considering the size. Many run down areas, no information about the group that actually lived there.... More 

3 Thank Siobhan L
Norwood, Massachusetts
Level Contributor
117 reviews
48 attraction reviews
common_n_attraction_reviews_1bd8 19 helpful votes
4 of 5 stars Reviewed 3 weeks ago

Biosphere 2 is a neat tour, As a little bit of a science and movie fan, the history of Biosphere 2 and the ability to actually go inside it was extremely interesting. The potential solutions it could have to ensure the survival of the planet with the Arctic Ice caps melting is encouragng, It would be great if the University... More 

Thank Davedog14
Austin, Texas
Level Contributor
117 reviews
42 attraction reviews
common_n_attraction_reviews_1bd8 30 helpful votes
4 of 5 stars Reviewed 4 weeks ago

The tour was definitely worth it, as was the trip out there, but it had some issues. The tour guide was great. He was enthusiastic, informative, and funny. He gave lots of info and details and explained things really well. The tour itself took us to some public places, as well as some private ones, so that was cool and... More 

4 Thank Maddoggy25
Level Contributor
129 reviews
19 attraction reviews
common_n_attraction_reviews_1bd8 45 helpful votes
4 of 5 stars Reviewed August 21, 2016 via mobile

My husband and I are very happy that we visited this interesting, landmark. Our tour guide, Ren, was fantastic. His presentation was extremely informative and educational. Definitely worth a stop if your in the area. Be mindful that it's not ideal for those who need assistance with walking. People in wheelchairs can enjoy the views, but not the tour. The... More 

1 Thank 1caringmom
Level Contributor
4 reviews
5 of 5 stars Reviewed August 21, 2016 via mobile

Very interesting, great guided tour, even if you know very little about science you would enjoy this tour. I learned so much about the different ego systems and the history of the Biosphere 2. My favorite was the rain forest!

Thank Fawndenarae W
Level Contributor
22 reviews
7 attraction reviews
common_n_attraction_reviews_1bd8 8 helpful votes
5 of 5 stars Reviewed August 17, 2016

You may think that this is just for STEM nuts or College kids, but this is an awesome and even educational experience for anyone. Bring your walking shoes and be prepared for climate changes inside. The views are awesome and so is the history.

Thank Dawn C
Oracle, Arizona
Level Contributor
15 reviews
4 attraction reviews
5 of 5 stars Reviewed August 17, 2016

The first time I went to Bio2 was 1994 at the event marking the exit of the 'Biospherians' from the isolated enclosure and have visited it a number of times since. I was impressed by the structures and how the system operated. The design is very 'science fictiony'- you can imagine such a structure on Mars or the moon. The... More 

Thank ivgotit2

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  • Do I have to buy a ticket for my infant?
  • How do I get there using public transportation?
  • Is there a restaurant or café onsite?