As an aside, if anyone is going to Southern Germany, it's worth going to Technik Museum Speyer, where you can really go into the guts of the 747. They also have a Russian Buran space shuttle.
The next day you could go to Technik Museum Sinnsheim, which is about half an hour from Speyer, and has both a Concorde and a Tupolev Tu-144 (both of which you can go inside).
The thing you neglect to mention is that the Speyer 747 is suspended 30 meters above the ground. It's breathtaking.
Fair. We had been to Sinnsheim a couple of times before Speyer. In Sinnsheim, they have the Concorde/Tu-144 on poles on top of one of the buildings. So, the 30 meters high suspension of the 747 was not so impressive anymore I guess :).
The museums are also great for kids. We went several times with our daughter and she loved it every time.
The next day you could go to Technik Museum Sinnsheim, which is about half an hour from Speyer, and has both a Concorde and a Tupolev Tu-144 (both of which you can go inside).
All truly marvels of engineering.