From
http://www.montgomerypreservation.org/BOStation.html:
The Silver Spring B&O Railroad Station is significant for its association with the transportation-related growth and development of Silver Spring as the key suburban connection for train and automobile traffic, and for Silver Spring's development as a suburban area with close ties to the growth of Washington, D.C. The station - the only 20th century railroad station in Montgomery County and one of only two 20th century B&O stations extant in Maryland - represents the evolution of Silver Spring from a small country town centered around the railroad depot to a major transportation, retail, and residential suburb. Located just seven miles from the U.S. Capitol, the station served the commuter and long-distance needs of suburban residents for over 50 years and the station site represents more than 120 years of continuous passenger rail service by the B&O, Amtrak, and MARC rail lines.