This must be one of the only buildings in downtown Washington whose lights aren’t in this old gallery; in fact I only noticed the building because it’s across the street from Constitution Gardens, where we were headed to photograph birds. I asked Tim to take this picture for me because my 300mm lens wouldn't have gotten enough in the shot, and it was too far away for my cell phone.

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The United States Public Health Service Building, also known as the Federal Reserve Board - East Building and formerly the Department of the Interior - South Building, is a historic government office building. It is located at 1951 Constitution Avenue NW, adjacent to the Eccles Building.

It was the headquarters of the U.S. Public Health Service during 1933–1942 and 1946–1947; at other times it was the headquarters of the Combined Chiefs of Staff, Atomic Energy Commission, and National Science Foundation. From 1965 until 2018, it was used by the Department of the Interior, most prominently as the headquarters of the Bureau of Indian Affairs and Office of Surface Mining. In 2018, it was transferred to the Federal Reserve Board of Governors.

Best to view in "Original" because other versions resized by PBase are decidedly
unsharp.

Sahraa’s idea of a walk, posted earlier: