Liberia is a Federal-style plantation house built around 1825, sitting on a modest rise north of Old Town. During the Civil War, the house served as headquarters for several Union generals, and Lincoln himself visited here in 1862 following the second battle. The property is owned by the City of Manassas and managed as a historic site.
The house exterior and grounds are accessible; check with the city for interior tour schedules. It is a short drive from the Old Town district and easy to combine with a visit to the battlefield. The architecture itself is modest but evocative — a typical Virginia farmhouse that found itself at the center of a war.