Uncovering the sad truth of the past, Slave Pens existed in and around all of Washington in the 1860s. This photo shows one of those in Alexandria during the 1860s. Learn more at the Library of Congress.

Take a look at these incredible photos of the Steam Frigate Pensacola in Alexandria, VA during the Civil War in 1861. Click on it for amazing details and check out more photos here!

Get a better look at the Old State Department Building during the Civil War with this amazing photo. Click on it for some amazing details and find out why there are a large number of wooden boxes at the main entrance to the building.

Explore the 1861 Civil War map of Arlington, a reconnaissance map created by Benjamin Church. View the unusual orientation of the map, with north being down and to the right. Click here to view a larger version and study it.

Take a closer look at an amazing photograph of Georgetown ferry-boat carrying wagons and Aqueduct Bridge beyond from rocks on Mason's Island. Click to view the larger version and spend 15 minutes marvelling at the detail in this image.