Biosphere 2

32540 S Biosphere Rd, Tucson, AZ 85739 32540 S Biosphere Rd, Tucson Directions
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92% of 1934 customers recommended


Report | 7 days ago
Be prepared to walk and climb stairs. Plan at least 2 hours.
Report | 7 days ago
Bring water and good walking shoes. Alot of stairs. Going down was ok,going up if you have bad knees not so good.
Report | 10 days ago
We went in July so there were only 8 in our tour group. During winter months, groups can be 40 or more in size.
Report | 15 days ago
Just enjoy yourself!!!
Report | 19 days ago
Take the first tour of the day. Awe some place to visit.
Report | 20 days ago
make sure you have good walking shoes and can do a lot of stairs
Report | 21 days ago
Totally enjoyed this. ...would go back again
Report | 21 days ago
Tour can get long..but it's worth it
Report | 21 days ago
Wear comfy shoes and drink plenty of water. It's a pretty impressive place. Get gas, pack a cooler amd be prepared before getting there. The history tour is an hour or so, then the actual tour is another hour or so.
Report | 24 days ago
Bring water and comfortable walking shoes
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From Our Editors

In 1984, Space Biospheres Ventures purchased a few unassuming acres north of Tucson in the shadow the Santa Catalina Mountains. There, the company expanded its sci-fi-sounding activities—the development of space-colonization technology—and built what would evolve into Biosphere 2, recently seen on The Today Show.

Designed to re-create Earth's ecosystems, the gigantic glass enclosure (some 7.2 million cubic feet and 91 feet tall in some parts) is famous for housing biospherians in the 1990s. The researchers lived completely sealed inside for extended periods, giving scientists groundbreaking data on human survivability and interaction with particular bionetworks.

The University of Arizona had the 40-acre Biosphere 2 campus donated in 2011, maintaining it as a hub of serious research while expanding its mission to encompass interactive educational outreach. Each year, thousands pass through the on-site labs and classrooms as well as stroll the Biosphere 2 interior to view films, experience multimedia exhibits, or embark on guided tours. Tours venture into the actual ecosystems, allowing earthlings to note biodiversity, smell fresh precipitation in the rain forest, and savor the softness of savannah grassland underfoot until the resident grumpy old man yells at you to get the heck off his lawn. Before their dramatic conclusion at a million-gallon ocean tank, tours delve into the basement to explore the technosphere, where visitors can witness the deep inhales and exhales of the sphere’s respiratory system.

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Biosphere 2

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Many people described the Experience as Great.
+ 94%
- 6%

Many people described the Facility as Amazing. Others thought:
+ 75%

  • Amazing
  • Fabulous
  • Nice
- 25%

  • Bad
Many people described the Food as Great. Others thought:
+ 50%

  • Great
  • Outstanding
- 50%

  • Bad
  • Expensive
Many people described the Environment as Gorgeous.
+ 50%
- 50%

Many people described the Tour as Interesting. Others thought:
+ 97%

  • Interesting
  • Great
  • Informative
  • Enjoyable
  • Excellent
- 3%

  • Not Accessible
Many people described the Guide as Knowledgeable.
+ 92%
- 8%

Many people described the Price as Reasonable.
+ 50%
- 50%

Many people described the Tour Guide as Great.
+ 91%
- 9%