National Canal Museum

This museum is housed in a plain two-story brick building that's, appropriately enough, located alongside the canal. With fascinating exhibits on the integral role canals played in fostering the nation's economy, it's less dry than you might imagine. You can also hop aboard the Josiah White II, a rebuilt 19th-century boat (tours are offered on the hour), or learn about the life of a lock tender from a costumed interpreter.