The Bollman Truss Railroad Bridge is a landmark of industrial design and construction.
The Thomas Viaduct is an arched stone railway bridge spanning the Patapsco River between Baltimore County and Howard County.
Doughoregan Manor, a stately 18th-century estate.
The Rachel Carson House is a National Historic Landmark dedicated to the acclaimed author and conservationist.
The Carrollton Viaduct is a historic stone arch bridge located over Gwynns Falls in Baltimore.
Riversdale is an elegant manor house also known as the Calvert Mansion.