Floating superstructure
Designed by Benthem Crouwel Architects, the museum extension consists of a basement with a solid superstructure lifted above. This structure appears to float above the ground level, with the old building visible through the glazed ground floor.
This transparent ground floor houses an information centre, a library, a shop and a restaurant with a terrace. It is also the new entrance to the museum.
Above this, the new superstructure has two levels - a large exhibition space and auditorium on the lower level and offices above.
Six points of support
Large steel trusses in the facade allow the bathtub-shaped superstructure to be supported by only six points of support: five columns and a concrete wall. This made it possible to create a large open space for exhibitions.
Arup and Benthem Crouwel worked together to optimise the structure, defining details such as the location of the support points and the trusses.