If your travels take you to Denver, just down the street from Coors Field, is a museum that you MUST see. It is the National Ballpark Museum. It boasts an impressive collection of ballpark memorabilia that is more comprehensive than any displayed elsewhere. It is a must see for all Ballpark Chasers as well as anyone else interested in the history of baseball ballparks. It's curator, Bruce "B" Hellerstein, is enthusiastic, very knowledgeable, and an exemplary host.
Visit the National Ballpark Museum website here.

For photos from my visit there, visit my website.