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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 870 reviews
Visitor rating
  • 367
  • 289
    Very good
  • 132
  • 37
  • 23
Wonderful experience

My wife and I recently visited the University of Arizona's Biosphere2. We were led on an informational tour by one of the knowledgeable guides. Biosphere2 is a blend of science... read more

Reviewed 2 weeks ago
Roger C
Seattle, Washington
via mobile
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870 Reviews from our TripAdvisor Community

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Showing 848: English reviews
1 review
common_n_attraction_reviews_1bd8 1 helpful vote
Reviewed 4 days ago NEW via mobile

Awesome information and learning BUT, you are TRAPPED! The tour is over 2 hours long and 90 % if the tour, you could do on your own and get MORE info than what the Tour guide tries to give because YOU CANNOT HEAR THE TOUR GUIDE! But DON'T THINK YOU CAN ESCAPE AND LEAVE ON YOUR OWN! YOU ARE LITERALLY... More 

1 Thank Kimberly H
Level Contributor
8 reviews
4 attraction reviews
common_n_attraction_reviews_1bd8 5 helpful votes
Reviewed 2 weeks ago

This was a fun learning experience of how to create a sustainable lifestyle and how it may open the possibility of living in space. Scientific minded people will enjoy the tours and the guides encourage questions. When you enter, the staff immediately warns you that there will be a lot of walking and stairs. They are not exaggerating, so be... More 

2 Thank N A
Clancy, Montana
Level Contributor
36 reviews
24 attraction reviews
common_n_attraction_reviews_1bd8 14 helpful votes
Reviewed 2 weeks ago via mobile

We took the guided tour. It was one of the most interesting places I've ever been. Our guide, Yarina, was friendly, responsive, and incredibly well-informed. It was an easy walk through the various sections of the complex. Wouldn't recommend it for children, but if you have an interest in science this is a great place to visit.

1 Thank Sharon L
Seattle, Washington
Level Contributor
48 reviews
21 attraction reviews
common_n_attraction_reviews_1bd8 13 helpful votes
Reviewed 2 weeks ago via mobile

My wife and I recently visited the University of Arizona's Biosphere2. We were led on an informational tour by one of the knowledgeable guides. Biosphere2 is a blend of science and technology. For the scientific minded visitors, the guided tour provided an inside perspective of the history of Biosphere2, the self-sustaining environmental research performed by the original scientists (enclosed in... More 

2 Thank Roger C
Level Contributor
48 reviews
20 attraction reviews
common_n_attraction_reviews_1bd8 22 helpful votes
Reviewed 2 weeks ago via mobile

A lot of walking but well worth the day. Explore the Biosphere where a research team spent 2 years sealed inside. Now open to the public with lots of environmental and plant research still going on today.

1 Thank Charlotte B
Daytona Beach, Florida
Level Contributor
3 reviews
common_n_attraction_reviews_1bd8 3 helpful votes
Reviewed 3 weeks ago

In the interest of time I shall cut to the most interesting parts of the 2 hour tour of this very interesting place. It is interestingly interesting just how interesting this place is. It peaked my interest when the tour guide explained the original purpose of this interesting place and the interesting dynamic of the two crew teams that were... More 

3 Thank FeedMeFoodSeymour
Kingston, Canada
Level Contributor
43 reviews
10 attraction reviews
common_n_attraction_reviews_1bd8 16 helpful votes
Reviewed 3 weeks ago via mobile

Was neat to see all of the different environments, yet I was more interested in life during the experience. Our guide, Claudio, was very knowledgeable about the science of the place, but did not really provide much info about life during the years it was a closed system. We found it a little too scientific and not personal enough. More... More 

1 Thank betster28
Tucson, Arizona
Level Contributor
65 reviews
17 attraction reviews
common_n_attraction_reviews_1bd8 11 helpful votes
Reviewed 3 weeks ago

This is a 'must see' for anyone living in or visiting the Tucson area. It is currently owned and operated by the University of Arizona. From the history of this place, to the current research being conducted by the University, it is interesting for children to grandparents and everyone in between. The more times I visit, the more I learn.... More 

1 Thank grb53
Park City, Utah
Level Contributor
340 reviews
71 attraction reviews
common_n_attraction_reviews_1bd8 96 helpful votes
Reviewed 4 weeks ago

Go visit this place! It is very interesting and educational. Plan on at least 2 hours there and take water to drink. Go online to really see what is there.

1 Thank fuz13
1 review
Reviewed 4 weeks ago

This place is just weird. It is pricey and they shuffle you along through with a bunch of signs that just say TOUR---->. There is an odd video you see at the start of the tour that serves as a commercial for the place you're already at. I remember phrases like "scientifically important" being repeated but never explaining what they... More 

Thank Caitlin B

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Questions & Answers

Here's what previous visitors have asked, with answers from representatives of Biosphere 2 and other visitors
16 questions
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Charlotte, North Carolina
10 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?