Soon after its opening in 1999, the modern steel-and-glass extension to the museum revealed a number of shortcomings in the indoor environment and routeing. A competition was held to alleviate these problems. The new concept is distinguished by tall sculptural objects – so-called “trees of light” – the plastic lower sections of which are shaped to provide seating. At the top is a textile membrane that masks the light fittings and acoustic insulation. Assembled on site, these objects open out at the top, yet without obscuring the view of the monumental museum facade. They also house the steel columns and thus conceal the load-bearing structure, so that the glass roof seems to float above the lighted “treetops”.

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