The Deutsche Museum of Science and Technology, with its huge area and several layers underground, is the most interesting museum I have ever visited. It is divided into coal mine area, salt mine area, navigation area, aircraft area, physics area, vocal music area, astronomy area, computer science area and so on. Many Germans take their children to visit, patiently explain it to them, even one or two years old. Children do not understand, parents also bring visits, where teaching and entertainment, giving visitors a lot of interactive game facilities to better understand some physical phenomena, whether adults or children, in the science and technology museum can play a whole day is not boring, there is a souvenir shop outside the entrance, a lot of fancy toys.