The large, light-filled atrium serves as the organizing center of the museum, distributing 11,000 square meters of exhibition space over nineteen galleries. Ten of these galleries follow a classic orthogonal plan that can be identified from the exterior by a limestone finish. The remaining nine galleries are identified from the outside by swirling organic forms clad in titanium. The largest gallery is 30 meters wide and 130 meters long and houses a permanent installation called “The Matter of Time” by Richard Serra.