In September 1862, a newspaper correspondent from the Philadelphia Inquirer referred to Frederick as “one vast hospital.” In the aftermath of America’s bloodiest day at Antietam on September 17, 1862, over 8,000 wounded soldiers, Union and Confederate, were brought to make-shift hospital wards in Frederick’s churches, schools, hotels, and private homes. From the diaries and letters of the surgeons, soldiers, and civilians who were there, this guided walking tour will explore the locations of the city’s Civil War hospitals in churches, schools, and public buildings. Many of those same buildings still make up the historic district today.