If you have an interest in transportation of any type then this museum and its sister in Speyer are the museums for you. We have never been to such a comprehensive collection, whether it be motorbikes, cars, aircraft, trains, you name it they have it, including some incredibly rare and historically fascinating items. Most exhibits have a description in German and English and many of the aircraft can be accessed for a look inside.
The museum is easily accessible from the motorway and has large free parking lots. As well as the museum there is a 3D cinema which you can pay extra to go into to. There is a choice of films but they are all in German. Plan to spend all day and wear comfy shoes!