PO Box 158 (Rt. 65)
Sharpsburg, MD 21782
Days Open: Daily
Hours: 9:00 a.m. to 5:00 p.m. Park Grounds are open daylight hours.
The Bloodiest One Day Battle in American History where 23,000 soldiers were killed, wounded or missing after twelve hours of savage combat on September 17, 1862. The Battle of Antietam ended the Confederate Army of Northern Virginia's first invasion into the North and led to Abraham Lincoln's issuance of the preliminary Emancipation Proclamation. Antietam National Battlefield is one of the most pristine Civil War battlefields in the country.