We noticed that you're using an unsupported browser. The TripAdvisor website may not display properly.
We support the following browsers:
Windows: Internet Explorer, Mozilla Firefox, Google Chrome. Mac: Safari.

Biosphere 2

Certificate of Excellence
Sponsored by:
Map updates are paused. Zoom in to see updated info.
Reset zoom
Updating Map...
Your filters are still active.
There are no pins in your viewport. Try moving the map or changing your filters.
Sponsored by:
Get directions
Address: 32540 South Biosphere Road, Mile marker 96.5, Oracle, AZ 85623
Phone Number: 800-828-2462, 520-825-1289
Improve this listing
9:00 am - 4:00 pm
Closed now
See all hours
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.

read more

TripAdvisor Reviewer Highlights

Read all 579 reviews
Visitor rating
  • 223
  • 211
    Very good
  • 100
  • 27
  • 18
The failure that opened a wonderful way.

An attempt to reproduce the life cycle indoors, a fantastic piece of engineering, design and eduacação. The greatest success of this work was his failure as a primary goal would... read more

4 of 5 starsReviewed 4 days ago
Sao Paulo, SP
Add Photo Write a Review

579 Reviews from our TripAdvisor Community

Rate and write a review
Roll over, then click to rate
  Click to rate
Date | Rating
  • Dutch first
  • English first
  • French first
  • German first
  • Portuguese first
  • Spanish first
  • Any
English first
Joliet, IL
Level Contributor
76 reviews
21 attraction reviews
common_n_attraction_reviews_1bd8 34 helpful votes
5 of 5 stars Reviewed 4 days ago NEW

Interesting tour. Only complaint I have is that our tour group was way too big to enjoy the tour to the max. Would go again if given the opportunity.

Thank demmama
Sao Paulo, SP
Level Contributor
15 reviews
common_n_attraction_reviews_1bd8 7 helpful votes
4 of 5 stars Reviewed 4 days ago NEW

An attempt to reproduce the life cycle indoors, a fantastic piece of engineering, design and eduacação. The greatest success of this work was his failure as a primary goal would be: Keep in a secluded location a group of humans, birds, fish and animals in their environment that would be the sea, the farm, the tropic forest and the desert.... More 

Thank Trevus52
Phoenix, Arizona
Level Contributor
35 reviews
16 attraction reviews
common_n_attraction_reviews_1bd8 10 helpful votes
5 of 5 stars Reviewed 1 week ago NEW

I was at Biosphere 2 eight years ago - and have things changed in that time. I remember it as dusty and dirty - NO MORE! The facility is well maintained (and what is rusting due to the "salt sea" is being replaced), clean, and full of life. The tour is much more extensive than in the past and you... More 

Thank Linda K
Winnipeg, Canada
Level Contributor
22 reviews
7 attraction reviews
common_n_attraction_reviews_1bd8 6 helpful votes
3 of 5 stars Reviewed 1 week ago

The outside of the buildings were very impressive and the history and what the people tried to do is interesting. Unfortunately the tour was long and got very boring quickly. Price to get in was a bit steep so I think we expected a good tour. Overall we were a little disappointed. The building itself is becoming rundown and most... More 

Thank 2suncatchers
Level Contributor
424 reviews
274 attraction reviews
common_n_attraction_reviews_1bd8 240 helpful votes
5 of 5 stars Reviewed 1 week ago

The Biosphere 2 was an experiment conducted by private enterprise to see if people could create and regenerate an enclosed living environment. A group of 8 people lived in the sealed enclosure for two years growing their own food and recycling water and waste; then 6 people lived there for six months. Biosphere 2 (Biosphere 1 is the earth) is... More 

Thank Melodycthomas
Tucson, AZ
Level Contributor
22 reviews
10 attraction reviews
common_n_attraction_reviews_1bd8 1 helpful vote
4 of 5 stars Reviewed 2 weeks ago

This has been taken over by the University of Arizona so can only be better. Very educational. Worth the visit!

Thank Patrice H
Columbia, South Carolina
Level Contributor
11 reviews
3 attraction reviews
common_n_attraction_reviews_1bd8 7 helpful votes
3 of 5 stars Reviewed 2 weeks ago

Biosphere 2 is a fascinating experiment with a lot of scientific history. I would have loved to learn more about, unfortunately the two tours we took (The History Tour and the General Tour) were so disjointed and poorly put together that I walked away bored and confused. Our tour guides had a few anecdotes, but weren't terribly knowledgable about some... More 

Thank flashnick
Seattle, Washington
Level Contributor
23 reviews
17 attraction reviews
common_n_attraction_reviews_1bd8 3 helpful votes
5 of 5 stars Reviewed 2 weeks ago

We had friends and family tell us we needed to see this if in the Tucson area, so a few days ago we drove out to take the tour. Up to now, I've only had scant information on the history behind Biosphere 2, but after taking the tour, I was "re-educated." For starters, I thought we'd be looking at some... More 

Thank coffeetime69
Singapore, Singapore
Level Contributor
107 reviews
47 attraction reviews
common_n_attraction_reviews_1bd8 54 helpful votes
3 of 5 stars Reviewed 3 weeks ago

This is more like a research centre than a touristy attraction. The place is immaculate, well kept. The exhibits are not exactly very exciting but I appreciate the works behind the centre. Remember to go with a guide, otherwise, I don't think you will know what is there for you.

Thank alanthegreat
Tucson, Arizona
Level Contributor
84 reviews
8 attraction reviews
common_n_attraction_reviews_1bd8 29 helpful votes
3 of 5 stars Reviewed 4 weeks ago

Maybe it was our docent, maybe it was me but I just could not get interested in this attraction. I love science and I love history and I love novelty but this attraction was a miss for me. I would go back for another try at it,

Thank gastrnome

Travelers who viewed Biosphere 2 also viewed


Been to Biosphere 2? Share your experiences!

Write a Review Add Photos & Videos

Is This Your TripAdvisor Listing?

Own or manage this property? Claim your listing for free to respond to reviews, update your profile and much more.

Claim Your Listing

Questions & Answers

Here's what previous visitors have asked, with answers from representatives of Biosphere 2 and other visitors
2 questions
Ask a question
Red Wing
11 months ago

See all questions (2)

Questions? Get answers from Biosphere 2 staff and past visitors.
Posting guidelines
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?