Stories of Interest

Thomas Viaduct

One of Patapsco Valley’s most renowned landmarks, the Thomas Viaduct, is designated both a National Historic Landmark and a National Historic Civil Engineering Landmark. The Thomas Viaduct …

Thistle Mill

Just outside of the boundaries of Patapsco State Park in Ilchester lies the remnants of the valley’s third cotton mill. Now reduced to an open concrete floor, this site was once …

Orange Grove Mill

On the east bank of the Patapsco River, across from the Swinging Bridge, lie the remains of the Orange Grove Mill. Visitors to Patapsco Valley State Park’s Avalon entrance can walk right up …

Benjamin Banneker

Benjamin Banneker is often considered the first African American man of science. Though descendant to enslaved Africans, Benjamin was born free. Banneker’s father, Robert, …

Ellicott City B&O Station

Ellicott City’s B&O Station is one of the most popular historic sites in the Patapsco Valley. Built in 1831, the Ellicott City Station, the oldest surviving rail depot in America, still stands along active rail tracks …

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