If you want to digest Civil War history, Antietam National Battlefield is one of the best places to do it in Washington County.
But there's something to remember when visiting a battlefield: Without a story, it's just a big plot of land with endless trees, rows of corn, wheat fields, and a few farm buildings and churches. You need some sort of guidance on the field.
There's more than one way to tell the story of the bloodiest single-day battle of the Civil War and the National Park Service at Antietam takes several approaches.
There are two movies shown seven days a week, both with realistic battle re-enactments. The 25-minute film is a good overview of the battle's significance to the outcome of the war. The film is shown throughout the day, every half-hour, except at noon.