Biosphere 2 is "the world's largest Earth and Environmental Science laboratory." It has been owned and operated by the University of Arizona since 2011.
As you walk onto the expansive 40-acre campus, you'll feel like you are entering a set for a television show where you might visit dinosaurs or travel to another time/space dimension. The giant glass building with cylindrical lines is both beautiful and mysterious against the mountainous backdrop. Inside the facility, you
Don't let appearances fool you, however. Biosphere 2 is a scientific laboratory with a mission "to serve as a center for research, outreach, teaching, and life-long learning about Earth, its living systems, and its place in the universe."
Constructed between 1987 and 1991, the original 150 million dollar project was funded by a private donor.
The 3.14 acre facility is an astonishing 7,200,000 cubic feet of sealed glass.
Biosphere 2 contains the following biomes:
Also in the same facility is an agricultural system, a human habitat, and a below-ground infrastructure.
Biosphere 2 had two "closure experiments" - dubbed Mission 1 and Mission 2 - during which the structure was sealed with researchers living inside. The first, with a crew of eight people, ran for two years from 1991 to 1993. Following a six-month transition period during which researchers entered the facility through airlock doors and conducted research and system engineering improvements, a second closure with a crew of seven people was conducted March 1994 – September 1994. The researchers - now referred to as "Biospherians" - lived and worked inside the facility... conducting experiments, harvesting their own food, and maintaining their living space.
After being owned by Columbia University from 1995-2003, the facility was in limbo and was almost replaced by a luxury housing development. The University of Arizona formally took over in 2011 and now uses the space for research and education.
Biosphere 2 is at 32540 South Biosphere Road in Oracle, AZ (northwest of Tucson).
Biosphere 2 is open every day of the year (rain or shine) from 9:00am to 4:00pm - with the exception of Thanksgiving Day and Christmas Day.
Self-guided tours are offered daily and take approximately 1 hr 15 min to complete.
Plentiful, complimentary visitor parking is available.
Dress for the weather as you will spend part of your tour outdoors. Some of the biome areas can be quite humid/warm so layers are advised. Good walking shoes are also recommended since the tour consists of approximately 150 stairs (up and down) and the route is just under one mile to walk round-trip.
Water bottles and a camera. Even though food is not permitted on the premises, it would be wise to bring a few snacks or a small cooler in your car since the facility is quite a ways out of the city center.
No outside food is allowed on the Biosphere 2 campus.
Yes. The Biosphere 2 Café offers light snacks and drinks - including "artisan sandwiches, freshly made salads, soups, and hot dogs."
Most meals are between $7-$8 and include a drink + your choice of chips or fruit.
Biosphere 2 is pretty far off the beaten path. Expect to drive 15-30 minutes to dine. Our top restaurant picks within a 15-mile radius are:
All ages are welcome, but the nature of the facility really lends itself best to an older child and adult audience. We recommend ages 8 and up.
The tour is not accessible for strollers and wheelchairs, but you may want to bring one for your walk from the parking lot to the main building if you have a toddler. Note that backpack carriers cannot be worn, but front carriers and slings are permitted.
Only assistance animals, such as guide dogs for visually impaired people, are allowed on the premises.
Yes. You are welcome to make the guided tour a part of your child's birthday celebration.
Yes. Events are approved on a case-by-case basis.