The Massachusetts Museum of Contemporary Art or Mass MOCA in North Adams, Massachusetts, USA is the new physical plant for massive modern installation work. Opened less than a year ago, the museum is formed from the resurrected industrial-sized buildings of the Sprague Electric Company. Huge works in huge spaces abound (example: Robert Rauschenberg's The 1/4 Mile Piece).
From the sound side are four installations that are about or near the grounds of the museum. The Harmonic Bridge by Bruce Odland (USA) and Sam Auinger (Austria) is first rate. The hum/whistle of highway traffic is caught in resonating tubes on a bridge and piped via computer to a concrete encased outlet below the bridge. The bridge underside is easily accessible from the Mass MOCA parking lot. Only caveat: the resonators tune the traffic. It would have been far better for the traffic's changing actual resonant tones to be the focus, rather than the externally projected tube resonance - the locked frequencies that the installation uses. Still their realization is compelling.
Also worth a listen: The Clocktower Project of Christina Kubisch (Germany) and Music for a Quarry by Walter Fähndrich (Switzerland). Unfortunately Ron Kuivila's (USA) work Visitations has little original sonic impact. Sadly the simple collaged work of former and present electric company workers talking about the workplace lacks dynamic or textural range, or decisive conceptual interest. Fortunately Ron weighs in later with a much stronger piece at a different site.