For Sale: Biosphere 2

jangobongo writes "The Texas company that built and owns the Biosphere 2 Center near Tucson, AZ has put the property up for sale. Built at a cost of over $200 million, Biosphere 2 was originally used as a a self-sustaining environment for humans with eight "biospherians" sealing themselves in for two years to see if they could survive without outside intervention. The Biosphere 2 campus consists of a 3.1-acre glass terrarium and 70 other buildings on 140 acres, and includes offices, classrooms, laboratories, residential housing, and a hotel and conference center. Because it is a very expensive place to operate, the more than 85,000 visitors last year were not enough to make money on tourism alone. Potential uses for the property: a religious college, spa, golf resort or even a technology park."