GBBN revamps and extends brutalist Hillman Library in Pittsburgh

International architecture studio GBBN has renovated a 1960s library at the University of Pittsburgh, in Pennsylvania, USA, adding a stacked-glass extension, to act as a central hub for students. The new 230,000-square-foot (21,365-square-metre) Hillman Library opened in 2025, transforming a 1968 design by local mid-century studio Celli-Flynn & Associates into 21st-century academic infrastructure. GBBN, which The post GBBN revamps and extends brutalist Hillman Library in Pittsburgh appeared...