About an hour north of Fredericksburg, but a nice museum, full of history.
Just across the river, Chatham is beautiful any time of year. Atop the hill gives a great view of the small city!
Kenmore was one plantation owned by George Washington's sister (Betty)'s husband. When most people think of Fredericksburg, they think of the Civil War, since there are so many battlefields, but there's actually quite a bit of Revolutionary History as well!