The Box went to see Hampton National Historic Site in Towson, Maryland, the first National Park Service site to be added to the system because of its architectural value.
Hampton was the largest house in America when it was built in 1790. It was occupied by the same family until 1948. You can see the mansion house, gardens, fields, farm house, mule barn, log house, dairy, slave quarters, and family cemetery. And it's free.
That's the mansion house in the background between the tall trees, as seen from the farm house road. Oh, and the little silver box is the xB.