The social activity on Tuesday afternoon will be a visit to the biggest national park in the Netherlands, the Hoge Veluwe. The majority of this park was formed during the ice age, so there is a lot of history there. Following Dutch customs, we will be making a tour by bicycle (about an hour, special bicycles available), weather permitting. The park was established by the businessman Anton Kröller and his wife Helene Kröller-Müller. There is a famous museum in the park, named after Helene. The Kröller-Müller museum has a world renowned collection of paintings by Van Gogh, but also Pablo Picasso and the Dutch painter Piet Mondriaan. Outside of the museum is a large sculpture garden, with a fine collection of modern and contemporary sculptures. This garden reflects Helene's idea of a symbiosis between art, architecture and nature.