Frederick County Maryland (Vacant / Not In Use) has 7 places on the National Register of Historic Places including 1 place of National significance and 3 places of Statewide significance. Significant places include One-Million-Liter Test Sphere, Cullen, Victor, Center, Old Administration Building, Cullen, Victor, School Power House and Woodsboro and Frederick Turnpike Company Tollhouse and Markell, George, Farmstead.
The famous person John Shafer is associated with one of more of the Frederick County historic places.
Some of the country's most noteable architects helped create the Frederick County places including Wyatt & Nolting, Smith,Henry, Sons & Co. and Joseph Wolfe. Prominent architectural styles found in Frederick Country are Colonial Revival, Federal and Greek Revival.