Found on Architonic , the Revalidation center “Groot Klimmendaal’ brings together both complexity and simplicity with attention for physical, practical and social details. Transparency, continuity, layering, diversity, the play of light and shadow and the experience of nature are all ingredients of this stimulating environment. A combination of large and small voids and light wells ensure a spatial connection between different levels and allow natural daylight deep in the heart of the 30metres wide building. Interplay of striking but subtle colors and direct and indirect (artificial) lighting enlivens the interior. The building is the result of an intensive collaboration between architect Koen van Velsen and the users of the building. For example, a shallow timber staircase runs the full internal height of the building and is typical for the new integral way of working. It facilitates a direct route between the different floors but also enables a variety of alternative routes roaming the building and thus forms an invitation to undertake physical exercise.