Half the collection is outdoors and the other half inside hangars:

Multiple hangars with more aircraft:

Nice collection of engines:

The last (or actually first) hangar had world war 1 planes:

I also have to give them credit for recognizing the French inventor, Clement Ader, who made the first heavier than air flying machine (using a heavy steam engine), 6 years before the wright brothers. Sadly that machine didn't work well but it still flew:

The museum was definitely worth at least 2H if you care about flying things :)