Region
Atlantic Ocean
1
Baltimore
6
Baltimore (Md.)
3
Baltimore Metropolitan Area
1
Baltimore Region
1
Bladensburg
1
Chesapeake Bay
1
Chesapeake Bay (Md. and Va.)
1
États-Unis
1
Fort McHenry (Baltimore, Md.)
1
Frederick County
1
Frederick County (Md.)
1
Maryland
9
Pennsylvania
1
Star-Spangled Banner National Historic Trail (Md. and Washington, D.C.)
1
United States
Washington (D.C.)
1