Biosphere 2

Top 3% of attractions in Tucson
7/10

5 expert reviews

“A real rainforest, a million-gallon ocean, green-technology systems and firsthand experiments about future life on our planet.”

– Where

Fodor's Fodor's
"In the town of Oracle, about 30 minutes northwest of Tucson, this unique, self-contained cluster of ecosystems opened in 1991 as a facility to test nature technology and human interaction with it." Full review
Frommer's Frommer's
"For 2 years, beginning in September 1991, four men and four women were locked inside this airtight, 3-acre greenhouse in the desert 35 miles north of Tucson near the town of Oracle." Full review
Lonely Planet Lonely Planet
Top Choice
"Built to be completely sealed off from Biosphere 1 (the earth), Biosphere 2 is 3 acres of glass domes and pyramids containing six ecosystems: ocean, mangrove, rainforest, savannah, desert and city" Full review
Travel + Leisure Travel + Leisure
"Billed as “The World's Largest Earth Science Experiment,” Biosphere 2 is a controlled environment that was created to understand Earth’s living systems and the impacts of climate change"



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