Right along the A12 lies the colossal office Westraven, the proud creation of Rijkswaterstaat (part of Ministry of Transport, Public Works and Water Management; manages and develops the country's infrastructure). The original 1975 building by Lucas & Niemeijer architects, underwent a major metamorphosis. An anonymous tower was transformed into a modern and appealing building. With the renovation of the tower, using the latest techniques the existing sick building syndrome was cleared. The renovation is combined with the construction of two new wings (low rise) at the canal. The wings are connected by greenhouses. A sheltered courtyard garden is the connection of the low building with the tower. The garden with pond and its surroundings are designed by the German office Wes & Partner. Striking innovation is woven fibreglass cloth used in 3 of the 4 glass fašades. The Teflon coating is added to temper wind and sun without loss of views. Ned Kahn installed an artwork above the entrance.