
Structurally, the building is a marvel. The offset sandstone boxes each project 12 meters from a concrete service core, held firm by massive steel trusses that remain exposed in the galleries. During construction, these metal braces were installed with a slight upward shift - the precise angle of deflection calculated by computer programme - and then allowed to sag into place with the added load of the sandstone panels. Another computer algorithm is responsible for the disposition of those panels, which were taken from four separate quarries and therefore have subtle gradations in tone.The building is essentially a circulation diagram writ large. One travels up a "street" that spirals around and up the building, identifiable from the outside by its curtain wall of wavy glass. In effect the museum works something like an inverted Guggenheim, the mother of all iconic modern museums, except that here one looks out at the city rather than in at the building itself. The black box galleries are somewhat dim, but the display design by B-Architecten compensates, and there is much wonderful material to lose oneself in for many an afternoon.The patterning is random, but constrained in such a way that three panels of the same colour never touch. In the sun, the result is a dappled effect that is beautiful; under the flat grey skies that are so common in Flanders, the panels add a surface depth and visual complexity. Inside, the sandstone panels act as pavers and wall surfaces, lending the building an overall unity and distinct sculptural quality.
Mark Lamster is a writer on the arts and culture. He is Associate American Editor of The Architectural Review, and is currently at work on his third book, a biography of the late architect Philip Johnson. Follow: @marklamster.
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