Hi Gang,
for the start of the "celebration" for 100 years of WWI, one of my favorite museums does a show in spring, called Museumsfrühling.
http://www.museum-stammheim.de
The museum is located in the southern part of Germany, near the city of Schweinfurt. So nobody can expect a Beltring like show, but the Museum has an interesting collection of vehicles, most noticable the only Feuerlöschpanzer Marder firefighting vehicle, based on the Marder mortarcarrier PT.

Cheers
Hans-Hermann