Read more about the Old Post Office
- Architect:Willoughby J. Edbrooke
- Alias:Post Office building
Nancy Hanks Center
- Height:96,0m / 315ft
- Address:1100 Pennsylvania Avenue, at the southeast corner of Pennsylvania Avenue and 12th Street, N.W.
- Constructed as a combined United States Postal Department and District Post Office building.
It was the first steel-frame building constructed in Washington
Designated a National Historic Landmark in 1973.
The building was saved from demolition in 1934 due to lack of money during the Great Depression and it was saved again in 1973 after Nancy Hanks reversed a decision to raze the building.