Public Safety Answering Ctr (PSAC II), Bronx. New York, New York

The $800 million PSAC II, a 240-by-240-by-240-foot concrete fortress, designed by Skidmore, Owings & Merrill is where more than 11 million emergency 911 calls (230 operators) are taken by Police and Fire Depts. each year.  It is intended to be self-sufficient for 3 days.  It is surrounded by an earthen berm, appearing to make building float.  Phytoremediation, the use of plants to purify the interior, was undertaken by Rensselaer Polytechnic Inst.

350 Marconi St.