George and Martha Washington are buried at their Mount Vernon estate in Virginia. Their tomb was once visible from the Potomac but was moved farther up away from the river t … o protect the grave site from flooding.  Mount Vernon, Virginia.o. An interesting detail about Washington's burial is that he specifically ordered that his body NOT be buried for at least 3 days after his death, for the exact reason that … he, and many others at that time, was afraid of being buried alive.