Part I is a bit light on artillery but does show a very rare, original (I think) Civil War 2.5-inch rocket launcher.
http://www.youtube.com/watch?v=-iqMiPeekCkPart II, which is being uploaded now, shows quite a few artillery artifacts.
This fort was part of a ring of many forts which formed the Defenses of Washington DC during the Civil War. It is almost in my backyard, but yesterday was only the second time I've visited in the 30 years I've lived here.
