The Dordrechts Museum accommodates one of the most important collections of Dutch Masters in The Netherlands. The existing building – an asylum, converted to a museum in 1904 - had become too small to show the collection and temporary exhibitions at the same time. Also climate control was primitive, preventing the exchange of paintings with foreign institutions. The building has been extended and restored. It now offers the visitor a continuous route. In the extension, this circuit opens up into a ‘clear labyrinth’ allowing visitors to make their own journey through the exhibitions. Interventions are in clear contrast with the existing monument: The floating, ‘stealthy’ box of the extension has a strange, silent expression, while hiding the new climate machinery. The new entrance is fully transparent, as is the ‘greenhouse’ which was added as a terrace to the restaurant, offering a beautiful view towards the museum garden. In this element, no construction other than glass was used.