Featuring a wide array of artifacts illustrating the area's history, especially the Civil War era, the museum also includes several offsite buildings, such as the Manassas Railroad Depot of 1914 and the 1825 brick farm house, Liberia, once the home of the largest number of enslaved African Americans in the Manassas area. Several Confederate generals made Liberia their headquarters. Abraham Lincoln visited this site in 1862. Permanent and temporary historical exhibits at the museum interpret Northern Virginia Piedmont history through artifacts, documents, videos, and images. Nationally noted, the museum has been profiled in a number of national magazines and parts of its collection loaned out to such facilities as the Reagan Presidential Library.