Children can captain a pilot-boat, guide an excursion boat, patrol as a maritime policeman and investigate the goods and products that enter the harbour in sea containers. A sunken container at the bottom of the ocean tells the story of a lost treasure.
The outside terrace, featuring a traffic park, overlooks the skyline of Rotterdam. Containers from around the world can be unloaded with straddle carriers and cranes. Children distribute them to a ship, a train or a truck, to be transported to mainland of Europe. There is also a splashing water surprise, for warm summer days.