Smack in the Arizona desert.
The gallery (in flash) is much more amazing.
"In the 1800s, the property was part of the Samaniego's CDO Ranch. After several changes of ownership, it became a conference center in the 1960s and 1970s, first for Motorola, then for the UA. Space Biospheres Ventures bought the property in 1984 and began construction of the current facility in 1986. Human missions 1 and 2 lasted from 1991-1994. In 1994, Decision Investment took over the property and Columbia University managed it from 1996-2003. The property was sold June 4, 2007, to CDO Ranching & Development, L.P."
The controlled environment (there is a section that mimics a rainforest!) will gain new life, as it was recently leased for advance research. Yesterday's Press Release.