President Street Station offers a glimpse of the violence and divided loyalties that the war caused in Maryland, a state caught in the middle. Originally the Baltimore terminus of the Philadelphia, Wilmington & Baltimore Railroad, the relocated station, built in 1849, contains exhibits that depict the events that led to mob violence. It began when troops from the Sixth Massachusetts Regiment bound for Washington, D.C., walked from this station to the Camden Station
(near Oriole Park). In what would be the first bloodshed of the Civil War, four soldiers and 12 civilians were killed; 36 soldiers and a number of civilians were wounded. The riot lasted for several hours and inspired the secessionist poem "Maryland, My Maryland," today the state song.