Biosphere 2
Oracle AZ
September 18th 2026, 10:00am
Biosphere 2 by the Numbers:
- 3.14 acre research facility
- 7,200,000 cubic feet under sealed glass; 6,500 windows
- 91 feet at highest point
- sealed from the earth below by a 500-ton welded stainless steel liner
- 40-acre campus
- 300,000 sq. ft. of administrative offices, classrooms, labs, conference center, housing
- Elevation is 3,820 feet above sea level
- Over 3,000,000 visitors since 1991
- Over 500,000 K-12 student visitors since 1991