We go there for a school trip every year. It is an excellent value. The tanks for climbing on and the beautiful grounds have already been mentioned. Even more impressive is the museum. The best parts of this are the realistic reproductions of different military sites: you can walk through Cantigny, France during WWI, hide out in trenches, walk ...

The gardens are wonderful, always changing and always beautiful, at least in spring, summer, and fall.

Col. McCormick's collection of archetecture and statues on the grounds are very impressive. But his house, and the EXPERIENCED TOUR GUIDES, are unbelievable. Also, the tour of the house is free.

The best part is the tank display out ...

What a place! For a $7 fee per car fee, you have access to the entire grounds. There is a huge botanical garden, military tanks for kids (and adults) to look at and climb on, free concerts and a military museum (that I think supasses any I have seen anywhere in the country).