The east and west gallerias provide unimpeded art display space, while the central-exhibition gallery can be reconfigured with movable partitions for changing exhibitions. Each galleria has 38 skeletal, concrete arches. Then follow the ceiling down to the arches. Biomorphic by design, one might think of this as the whale's rib cage. The shape they make is the same proportion.
Skylights introduce natural light into the building.
The Z-shaped bands of glass that line the east and west gallerias have a bluish tint, not unlike the lake on a sunny day. If you're inside, the diagonal of the skylight offers views of either the lake or the city. If you're outside, the lower skylight reflects downtown buildings. By day, the building will be illuminated with sunlight. By night, lights tucked under skylights will create an internal glow, like a lantern.