The Pittsburgh Opera just announced its plans on "greening" its new home in the Strip District so that it be considered for a Leadership in Energy and Environmental Design (LEED) Operations and Maintenance Certification. The Opera already recycled the building itself, once the George Westinghouse Air Brake Factory. They moved into it in April of 2008.
I can't say this really excites me as an opera fan, but it is good to know the Pittsburgh Opera is taking green building and sustainability so seriously. They will likely be a leader in the opera industry for this simply because most opera company buildings and halls were built earlier.