Source: Wingardhs Photography: Christoffer Grimshorn The addition to Liljevalchs Konsthall is reserved without cowering. Its posture is that of a discreet aide attending to the existing art gallery. A small, precisely tailored operation. One hundred seventy square meters of glass roof let the whole sky into the building. It’s all rather simple. A square filled with molded skylights. Two meters wide and two met