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.
Improve this listing
Sponsored by:
Map
Satellite
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
Website
Today
9:00 am - 4:00 pm
Closed now
See all hours
Hours:
Sun - Sat 9:00 am - 4:00 pm
Activities: Group tours/walking tour
Description: 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 499 reviews
Visitor rating
  • 197
    Excellent
  • 184
    Very good
  • 77
    Average
  • 25
    Poor
  • 16
    Terrible
Tour of the facility and looking at exhibits and film about the biosphere.

Very informative. We didn't have time to look at some of the exhibits outside the biosphere itself. I have some difficulty walking (use a cane) and the steps were challenging... read more

4 of 5 starsReviewed April 21, 2015
Fritz S
,
Phoenix, Arizona
Add Photo Write a Review

499 Reviews from our TripAdvisor Community

Date | Rating
  • Dutch first
  • English first
  • French first
  • German first
  • Portuguese first
  • Spanish first
  • Any
English first
Silver Spring, Maryland
Top Contributor
65 reviews 65 reviews
33 attraction reviews
39 helpful votes 39 helpful votes
3 of 5 stars Reviewed April 24, 2015 NEW

This is a very unique place and definitely worth the visit, but I left feeling like it could've somehow been so much more. Your admission gives you the opportunity to explore the grounds, see some exhibits and take the tour. The tour has about 1/2 hours worth of things to see, but they expand it to three times that length... More 

Was this review helpful? Yes
Edmonton, Alberta, Canada
Top Contributor
88 reviews 88 reviews
16 attraction reviews
22 helpful votes 22 helpful votes
5 of 5 stars Reviewed April 22, 2015 NEW

What a great experience. So interesting. The tour takes about an hour and a half and is about a mile in length. The tour guide was excellent in explaining all the different areas we visited. The biosphere is part of the campus of the University of Arizona and what a wonderful facility for the students to conduct their experiments.

Was this review helpful? Yes
Phoenix, Arizona
Senior Reviewer
8 reviews 8 reviews
3 attraction reviews
1 helpful vote 1 helpful vote
4 of 5 stars Reviewed April 21, 2015 NEW

Very informative. We didn't have time to look at some of the exhibits outside the biosphere itself. I have some difficulty walking (use a cane) and the steps were challenging but worth the effort. The tour last about 1 1/2 hours. There are no bathroom facilities or water once the tour of the biosphere starts.

Was this review helpful? Yes
Orlando, USA
Reviewer
5 reviews 5 reviews
5 of 5 stars Reviewed April 19, 2015 NEW

A little out of the way but well worth the drive! Half the admission is tax deductible! Definitely take the complete tour and even explore a little more on your own! Ask lots of questions of the tour guides! They know a lot!! Enjoy the view!

Was this review helpful? Yes
Herndon, Virginia
Top Contributor
58 reviews 58 reviews
21 attraction reviews
38 helpful votes 38 helpful votes
5 of 5 stars Reviewed April 12, 2015

I wasn't too excited about touring Biosphere2, but my family wanted to go. The minute I saw the complex, I was amazed! Biosphere2 is an engineering marvel. This is a great place to inspire young scientists. If you have time before your tour, you can check out the living quarters which the Biosphereans occupied in the early 1990s. The tour... More 

Was this review helpful? Yes 1
Atlanta, Georgia
Senior Contributor
33 reviews 33 reviews
11 attraction reviews
7 helpful votes 7 helpful votes
4 of 5 stars Reviewed April 12, 2015

We didn't know much about Biosphere 2. As scientists in unrelated fields this is sad. The boldness of this scientific undertaking is something that every student of science should learn. 25 north of Tucson, a modified, but still working laboratory, is owned and operated by the University of AZ. Our tour guide was long winded and a bit short on... More 

Was this review helpful? Yes
Cape May, New Jersey
Senior Contributor
35 reviews 35 reviews
20 attraction reviews
19 helpful votes 19 helpful votes
5 of 5 stars Reviewed April 10, 2015

Talk about educational, exciting, & ecosystems galore! The tour starts with an informative video & then walking/stair climbing so wear your sneakers. You will experience several climates in a matter of a few short minutes. The docent explains the many different experiments of the past & present occurring under the glass domes. You will see the belly of the buildings... More 

Was this review helpful? Yes 1
Top Contributor
117 reviews 117 reviews
9 attraction reviews
41 helpful votes 41 helpful votes
5 of 5 stars Reviewed April 10, 2015

Enjoyed our mile walk and tour through the Biosphere. Our guide had been there for many years and was very knowledgeable. It was mind opening and expanded our awareness of the Eco-Systems on our planet. Do not miss coming here if you are in Tucson.

Was this review helpful? Yes 1
Perth,Western Australia
Senior Contributor
42 reviews 42 reviews
12 attraction reviews
27 helpful votes 27 helpful votes
5 of 5 stars Reviewed April 7, 2015

In short, Biosphere 2 is well worth a visit. Sure the guide you get will make a difference as with most tours but for anyone with a scientifically inquisitive mind you won’t regret this stop. I guess we were expecting a giant greenhouse but it was so much more. The scale and engineering is amazing. Over 3 acres in size,... More 

Was this review helpful? Yes 1
Blue Bell, Pennsylvania
Top Contributor
377 reviews 377 reviews
193 attraction reviews
275 helpful votes 275 helpful votes
5 of 5 stars Reviewed April 6, 2015

The Biosphere 2 is quite a sight to see. If you take a tour, you'll get inside of it, and see how the biospherians lived (back in the 1990's). It's quite intriguing to see this environment that is completely separated from the rest of the world. This will be unlike any other tour you have ever taken and is quite... More 

Was this review helpful? Yes 1

Been to Biosphere 2? Share your experiences!

Write a Review Add Photos & Videos

Owners: What's your side of the story?

Register now for free — and start getting automatic notification of new reviews, responding to traveler feedback, adding new photos to your listing and much more.

Manage 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
3 months ago

See all questions (2)

Questions? Get answers from Biosphere 2 staff and past visitors.
Posting guidelines
Typical questions asked:
  • Will you pick up and drop off at my hotel?
  • I have a family of 7. Can your tour accommodate all of us together?
  • How should I dress for this tour?