Begin your Clara Barton tour at Manassas Battlefield paying particular attention to the sites associated with the Battle of Second Manassas. It was the Union wounded after this battle that Barton tended to. Next you'll swing by Ox Hill Battlefield Park which was the last engagement of the Second Manassas Campaign. Soldiers that were injured here were also nursed by Barton.
Your next stop will be at Saint Mary's Church. It was here that the Union wounded from the Second Battle of Manassas and the Battle of Ox Hill were nursed and tended to by Barton and others while awaiting transport to the safety of Alexandria by train. This was Barton's earliest inspiration for forming the American Red Cross. Nearby the Fairfax Station Railroad Museum details the importance of railroads in the region and also features exhibits on Barton.
Travel to the Clara Barton National Historic Site in Glen Echo, Maryland. This was Barton's home the last 15 years of her life and the structure illustrates her dedication and concern for those less fortunate than herself. Next head up to Frederick, Maryland and explore the National Museum of Civil War Medicine that details the medical hardships endured by soldiers and early medical techniques used by doctors in the field. To end the day, make your way to Antietam National Battlefield Park where Barton became known as the Angel of the Battlefield and where she almost lost her life to a stray bullet. While there be sure and take in the Pry House Field Hospital Museum.