The decisions being made by the U.S. Postal Service these days are all coming from the top. Namely, from the insular Postal Headquarters at L'Enfant Plaza, Washington, D.C. I figured you might at least like to see it.
In any case, I had the privilege of visiting Postal HQ last summer, back when the Postmaster General was Jack Potter. Here's the building:
You can read more about the L'Enfant Plaza complex here.
L'Enfant Plaza hosts a Post Office station of its own, which answers to the Washington, D.C. Main Post Office on Brentwood Ave., northeast of downtown. Ironically, while the fine folks who write the Postal Service's regulations work just upstairs from the L'Enfant Plaza Station post office, the clerks and supervisor I dealt with were inadequately informed as to said regulations. I had to wait 45 minutes to get a postmark from them, despite the myriad of other samples I had on me.
Here's the station in question, just off from the main underground mall, and near the entrance to Postal HQ:
(There's another photo of the underground mall, as well as a full architectural detailing of the whole plaza here.)