The biggest museums are primarily located downtown. One exhibit I find fascinating is the National Numismatic Collection located at the National Museum of American History. I'll let the photos speak for themselves (this is really only a small sampling. The room itself is not large, but there is a lot of interesting history housed within these four walls.
To see what is currently on display in this exhibit, more information can be gotten from the museum's website).
|I didn't manage to capture all the objects in this particular display, but from the descriptions you can see how diverse the collection is at the American History Museum.|