The green parkway along the Virginia side of the Potomac River (islands are DC) connects Riverside Park, the Mount Vernon Trail, Belle Haven Park, Daingerfield Park, Roaches Run Waterfowl Sanctuary, Gravelly Point, the LBJ Memorial Grove, Lady Bird Johnson Park, Theodore Roosevelt Island, and Turkey Run Park, so get out of the car frequently. I barely caught the Great Blue Heron flying under my footbridge, so keep your eyes open too. Great Falls on the Virginia side is a unit of this parkway park, but it’s part of C&O on the Maryland side.