Ft. McKinley?
Ft. McHenry is nowhere near Rte 40. Rte 40 is dead center of Baltimore. Maybe you meant you found your way to Rte 40.
Unfortunately, much of the formerly great city of Balto. Is sad boarded row houses, and abused houses elsewhere.
Embarassing ooops.... of course Ft Mc Henry. Rockets red glare etc.
The National Road (pike) runs from the port area and becomes US 40. It actually starts at the Bromo Seltzer Tower.