The architects behind the US$20m (€17.7m, £13.8m) renovation of the Westmoreland Museum of American Art in Greensburg, Pennsylvania, have claimed their work has launched “a new era” for the institution. New York studio Ennead Architects have used a simple palette of materials and textures – including precast concrete, zinc, brick and glass – to unify the 13,500sq ft (1,250sq m) expansion with the existing neo-Georgian structure. A new eastern brick