Unity Temple in Oak Park, Illinois, has emerged from the plastic cocoon that enveloped this Frank Lloyd Wright national historic landmark for over a year. While under wraps, the building was crawling with activity. Outside, crews repaired the concrete shell, cutting out chunks, filling in holes, and mending cracks. Indoors, plaster walls and ceilings were patched up and repainted to match their original texture and color. Piece by piece, Wright’s trademark art glass and wood