The Herndon Depot Museum, also known as the Herndon Historical Society Museum, is located in the town of Herndon in Fairfax County, Virginia. Built in 1857 for the Alexandria, Loudoun & Hampshire Railroad, the depot later served the Richmond and Danville Railroad, the Southern Railway and the Washington and Old Dominion Railroad. The structure is located at 717 Lynn Street, at the intersection of the Washington & Old Dominion Railroad Trail and Station Street, north of Elden Street (signed nearby as Virginia State Routes 228 and 606).