The Canadian warplane Heritage museum is definitely one of Ontario's best military aircraft museums it boasts 36 aircraft all together. The museum shares its runways with Munro Hamilton International airport and plays a huge part in Hamilton's annual airshow. The museum has multiple type of aircraft from multiple eras of  multiple wars. They have supersonic jet fighters touching wings with ww2 propeller aircraft witch is sure to inform and enthuse everyone who visits. The museum rebuilds and refurbishes military aircraft from all around the world to either flying condition or display condition. Some planes ever (for a high price) let you go up in a ww2 Lancaster bomber and be either co-pilot or bombardier or any position in the bomber. It great for kids and i can hear the 4 Rolls Royce Merlin engines rumbling and shaking my house from time to time. Unfortunately there was a fire in 1993 in one of the hangers and they lost 5 of their aircraft in the blaze; but they have replaced most of them with the last one nearing completion very soon. The Canadian warplane heritage museum is definitely a great place to visit in Ontario.