From Wilmington take I-95 south to DE Route 1 south toward Dover. Take exit 152 for Delaware City and Route 72. Turn left on Route 72 and follow into Delaware City. Go through the traffic light at Clinton Street and continue over the Branch Canal Bridge. Take your first left, which will put you onto Old Elm Ave and into Fort DuPont. Follow Old Elm Ave along the parade ground (on your right) to the first building on the right, 260 Old Elm Ave.