My dad and I went to the recently renovated National World War I Museum in Kansas City yesterday. Located on the grounds of the Liberty Memorial, the museum provides a comprehensive look at the first World War. It full of fantastic artifacts like these great uniforms worn by different brances who fought the war.
They also have a lot of neat interactive displays that explain the causes and events of the war in exacting detail. I could have spent all day there. If you have any interest in the subject then I suggest a visit to this great museum.