Why does water swirl down the plughole? Find out the answer to this and lots of other questions at the newly opened Museum with the Mouse. Part of the Odysseum children's museum in Cologne, the exhibition invites little ones to get involved and to make their own discoveries. The German children's TV show Die Sendung mit der Maus ('the programme with the mouse') provides the inspiration for around 30 informative interactive stations. Some of the mini adventures are on topics that children will recognise from their everyday lives. There are also 150 props on display from the much-loved programme's 42-year history.