Downton Abbey on the Potomac

The morning ended with a tour of Tudor Place. Built by the the grand daughter of Martha Washington, it is directly across the Potomac from her cousin's estate, Arlington House, home of Mary Custis who will marry Robert E. Lee. Their estate will become Arlington Cemetery. A great story involves the cousins communicating across the river via different colored petticoats hung in the window.
The ringer system for the slaves looks like the ones in Downton Abbey. Kinda eerie to think about it.