Explore the history and significance of the Smithsonian Castle in Washington D.C. Learn how this architectural gem served as a symbol of unity and enlightenment during the tumultuous post-Civil War era and its evolving role as the heart of the Smithsonian Institution. Discover how the Castle has endured as a treasured national landmark for over a century.

Take a rare look at Union soldiers guarding the Potomac River in Washington, DC in 1861. Georgetown University is visible in the background. Photo by George Barnard.

Discover a pivotal moment in history with Mathew Brady's stunning photo of Washington, D.C. in 1865, capturing the end of the Civil War era.

On April 19th, 1865, the nation came to a standstill to mourn the death of President Abraham Lincoln. This blog post looks back at the funeral procession, capturing the grief and sadness of the mourners and the solemn atmosphere of the event.

The Civil War reached the outer edges of Washington in 1864. It was so close that President Lincoln rode near the front lines of Fort Stevens and came under fire.

Take a look at this unbelievable photo of the South Lawn of the White House during the Civil War. Unbelievably, there are people sitting on what appears to be a low stone wall on the south side of the White House. Take a look at this incredible photo from the National Archives.

Uncovering the faces of regular African-Americans in the 1860s, this beautiful old photo from the National Archives captures the lives and work of those living around Alexandria. Learn more about these individuals and check out photos of young boys working in the area.

We recently came across a rare picture of Chain Bridge in 1861. Click through to read more and see this historic image from the Library of Congress.

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 Civil War photos of Alexandria, VA from 1861. See the steam frigate Pensacola in all its glory and click on it for some amazing details. Source: Library of Congress.