"PPG Place, a large building complex including a 40-story tower (635 feet) with five satellite buildings that cover a six city block area, was designed by Philip Johnson and John Burgee. The large urban complex was in part inspired by two existing architectural landmarks in Pittsburgh, the Cathedral of Learning in the University of Pittsburgh's campus and H.H. Richardson's Allegheny County Courthouse (both worth visiting when in Pittsburgh). In PPG Place, Johnson made loose use of Gothic architectural vocabulary, translating it into modern materials and construction techniques."
Landmarks, Companies - Headquarters, Buildings - Novelty / Interesting