Discover Biosphere 2


You’ve probably noticed the huge dome at the University of Arizona, but did you know you can visit Biosphere 2? It’s one of the most unusual facilities in the world committed to research and discovering more about worldwide scientific concerns. As a laboratory for studies, it features a massive arena just for discovery and discussion of science. Biosphere 2 is also a hub for outreach, knowledge and teaching about Earth and all its living systems.

How does Earth fit into the larger universe? How can we understand and protect Earth’s future? Biosphere 2 is dedicated to educating the public, a variety of industries and the government. It’s also a center for planning and management. Tours are available throughout the day, and it’s a must-see for any Tucson visitor.

Inside the Dome

Biosphere 2 encompasses over three acres and is completely under sealed glass with 6,500 windows. The highest point is 91 feet, it’s airtight and sealed into the ground with 500 tons of stainless steel. You’ll find it on the 40-acre campus that’s also home to the university’s classes, offices, conference centers, student housing and other labs.

Built in 1991, Biosphere 2 was named after the planet Earth itself—the original biosphere. It also has a basement, or the Technosphere, where all mechanics are kept. Permanent and temporary exhibits are on display throughout Biosphere 2, which is nestled at the foothills of the Santa Catalina Mountains. Daily tours are at 9 a.m. and 4 p.m., and no reservations are necessary. Special private group tours are also available with advanced notice.



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