RenÚ van Zuuk, a Dutch architect famous for his sculpture-architecture, designed a rectangular office building that is wedged between 2 other buildings. The fašade is composed of concrete elements which together form a continuous, wrap-around branch pattern. The skin extricates the building from its wedged position and forms a decorative filter between the internal world of the office and the outdoor world of the adjacent park. At the same time, the fašade is a pragmatic solution to the narrow 'window-cleaning balconies' stipulated in the programme. The urban design ruled out projecting balconies so Van Zuuk incorporated them into the fašade surface by placing them between the concrete branches and the floor-to-ceiling windows, thereby satisfying both streetscape and functional requirements. Pragmatic considerations like isolation and floor/fašade surface ratios also play an important role in Zuuk's buildings. This is why he calls his buildings 'mathematical sculptures'.