Take a look back in time to 1919 Washington, D.C. with this photo of 15th and Pennsylvania. See the old Riggs Bank building in the background, now the PNC Bank building.

Take a look back in time to uncover the mystery of homes advertised in The Evening Star in 1912. See the Google Street View to find out what these homes look like today.

Take a trip back in time to see F Street in the 1910s with this incredible old photo. Also, check out photos of F Street from different eras, such as the 1870s, 1860s and the Civil War.

Take a look back at Connecticut Avenue Highlands (now Cleveland Park) in 1910 with this old advertisement. Check out more of our awesome old ads here!

Take a look back in time to explore Center Market in Washington DC in 1910, just before the Mexican Revolution. See the interior architecture, stalls, and signs from over 100 years ago.

A stunning old photo of trucks on parade, going west down Pennsylvania Ave. towards the White House.

Can you help GoDCers solve a 100+ year old mystery? We need your help to figure out where this photo was taken in Washington, DC. The photo and a note from GoDCer Jeff (including his friend Alan) are included. Take a closer look and join in the discussion in the comments!

Where did former President Taft live while he was the Chief Justice? This old row house in Dupont Circle was where he lives during his Supreme Court tenure.

Check out these amazing old team photos of Georgetown Prep's JV basketball team from 1911. Amazing uniforms! See the current team photo too.

Read the story of Queen, the wild dog of Potomac Park who was slain in 1913. Learn about Queen's reign of terror over pedestrians and motor car drivers, and the efforts to shoot her that ultimately failed.