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Biosphere 2

Certificate of Excellence
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Address: 32540 S Biosphere Rd, Mile marker 96.5, Oracle, AZ 85623-7019
Phone Number:
09:00 - 16:00
Open now
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Sun - Sat 09:00 - 16:00
Recommended length of visit: 2-3 hours

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

Read all 863 reviews
Visitor rating
  • 365
  • 287
    Very good
  • 130
  • 37
  • 23
Different and Very Interesting - History and Future

Our trip to Biosphere 2 was a thought provoking trip that combined the history of the place--from its conception and construction thru its use as a sealed ecosystem. And how... read more

Reviewed 1 March 2016
L Fred C
Ocala, Florida
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863 Reviews from our TripAdvisor Community

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Showing 842: English reviews
Ocala, Florida
Level Contributor
36 reviews
7 attraction reviews
common_n_attraction_reviews_1bd8 10 helpful votes
Reviewed 1 March 2016

Our trip to Biosphere 2 was a thought provoking trip that combined the history of the place--from its conception and construction thru its use as a sealed ecosystem. And how several folks spent two years of testing their self-sufficiency and now to its current use as the largest 'lab' available for environmental research today.

1 Thank L Fred C
Level Contributor
63 reviews
18 attraction reviews
common_n_attraction_reviews_1bd8 12 helpful votes
Reviewed 29 February 2016 via mobile

Our tour, led by Yarina, was 90 minutes about how far we can go to model how our planet might react to different types of stress. She had an in depth grasp of how the facility has been changed during previous experiments. A major upcoming project will be modeling the Sea of Cortez. John Steinbeck wrote an early study, and... More 

Thank Dick D
Phoenix, Arizona
Level Contributor
56 reviews
40 attraction reviews
common_n_attraction_reviews_1bd8 15 helpful votes
Reviewed 27 February 2016

This was worth doing for something different. I was expecting something a little different due to things I have seen before (not just the movie Bio Dome but other places like in Montreal where there are different areas with different environments). There are no insects like butterflies or very small reptiles or even flowers. It was mostly trees and things... More 

Thank Phoenix_ArizonaJulie
Middleton, Wisconsin
Level Contributor
6 reviews
3 attraction reviews
common_n_attraction_reviews_1bd8 1 helpful vote
Reviewed 27 February 2016

This earth project is interesting to all ages. Originally created in the 1980's, the 3.14 acre "building" is an experience in the factors that create oxygen, soil, different climates and the earth's future. You see a rain forest, an ocean, desert while walking through each with a guide to explain the areas and the science behind the differences. The 1.5... More 

Thank Barbara M
Olympia, Washington
Level Contributor
81 reviews
24 attraction reviews
common_n_attraction_reviews_1bd8 28 helpful votes
Reviewed 25 February 2016

We could have spent all day rather than the 3 hours & 45 minutes we had. They close at 4. Of course, we had information overload, but enjoyed every minutes of it. We had Claudio as our tour guide...and he wants questions !!! So be prepared to ask away. Lots of self guiding areas, too.

Thank Ginny M
Phoenix, Arizona
Level Contributor
21 reviews
10 attraction reviews
common_n_attraction_reviews_1bd8 28 helpful votes
Reviewed 25 February 2016

It's almost as if the positive reviewers had been somewhere else. I loved seeing the buildings, I've read a great deal about the place, especially "Dreaming the Biosphere" which is about the group that founded it. The walking is especially difficult and I'm a hiker; our guide would keep us standing for up to 20 minutes while he rambled on,... More 

4 Thank bimajackie
Level Contributor
15 reviews
11 attraction reviews
common_n_attraction_reviews_1bd8 3 helpful votes
Reviewed 24 February 2016

Although the idea behind Biosphere 2 was pretty intriguing to me, this visit was less than that. The tour was nice and Did have it's interesting moments....it was a little underwhelming. I am glad we had 2 for 1 coupons.

Thank Sherri G
Level Contributor
60 reviews
31 attraction reviews
common_n_attraction_reviews_1bd8 18 helpful votes
Reviewed 23 February 2016 via mobile

This was a well worth visit. There is so much more to this place then you'd ever imagine. From desert to rainforest to oceans. How all of the climate and our living effects all. If you are not able to walk distance or are handicap in climbing stairs do not go. It's a lot if walking a cane is fine,... More 

Thank Sue D
Peoria, Arizona, United States
Level Contributor
76 reviews
13 attraction reviews
common_n_attraction_reviews_1bd8 27 helpful votes
Reviewed 22 February 2016

It was my husband's idea to visit this place. ($20 per person/$18 seniors/$13 children 6-12). We had a Groupon 2 for $28. Still a waste of money. I found it boring. Also there are 150 steps, inclines, stooping... not good for anyone with knee problems or handicapped. The facility is not being well kept. Lots of rusted pipes and fixtures,... More 

4 Thank Wendy R
Salt Lake City, Utah
Level Contributor
30 reviews
13 attraction reviews
common_n_attraction_reviews_1bd8 10 helpful votes
Reviewed 21 February 2016

This place is very interesting, and I ponder to think if it will survive. We had a good Guide tried her best to answer all the questions we asked and was pretty thorough. Go early when there are no crowds and then you don't have to wait for the next guide either.

1 Thank Pam L

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Charlotte, North Carolina
9 months ago
Richmond, Minnesota
Goodyear, Arizona
over a year ago

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Typical questions asked:
  • 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?