This amazing old photograph of the intersection of 14th St. and Pennsylvania Ave., where the Willard Hotel sits, has some amazing details. Click to see them and be blown away!

Take a closer look at this detailed map of Georgetown from the Library of Congress. Click on the image for greater details and find out more about this historic map.

Check out this old photo of Georgetown's flooding and the Potomac River in 1918. Read more about it at The Georgetown Metropolitan.

Look back in time to 1855 and get a fascinating bird's-eye view of Georgetown, D.C. in this beautiful painting. Source: Library of Congress.

This lovely old image shows the site of the National Archives early in the construction process. It was taken on July 1st, 1932.

Discover the history of National Airport with a fascinating look back at the old terminal building in 1941. From its humble beginnings as Hoover Field to its critical role in World War II and subsequent expansion, learn about the changes that have shaped this important transportation hub in the heart of the nation's capital.

Can you help us in our investigation to identify where President Wilson's 1919 Pierce Arrow is parked? Take a look at the photo we've shared and see if you can figure it out. Happy sleuthing!

Take a look at the Federal Aviation Administration's headquarters on DC's Independence Ave. SW and compare it to what the block looked like in 1941 on the eve of World War II. See how the landscape has changed in this comparison.

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.