There is a general discussion of aviation museums in Europe on another thread.
CNN has just put up a page titled "An aviation museum for people who don't care about aviation," about the Canada Aviation and Space Museum in Ottawa. The title is appropriate. That museum has both a very fine collection - one of the best in the world - and a very fine display (the two facets are worth separate consideration).
One of the issues is that a better display often means more room between exhibits and thus less aircraft. This is better for the general audience but perhaps not so appealing to us aerophiles who miss important aircraft that are in storage (the Ottawa collection includes very substantial WWI holdings, many of which are now in storage).
https://www.cnn.com/travel/article/aviation-museum-ottawa-canada/index.html