The Luftwaffe museum at the old British airfield of Gatow has a big collection of post-WW2 Luftwaffe airframes.
The Museo del Aviazone is located near Rimini halfway between the road between Rimini and San Marino. It has some interesting planes in its collection like an U.S. Navy A-7 (the only in Europe) and a Russian SU-17.
The Technikmuseum in Speyer has among classic cars and other wonders of twentieth century technology also a large collection aircraft. Some are not painted in ther original operational colourschemes but are creatively enhanced with varying results.