Prompt
"Generate an image of a classic, neoclassical-style building with a large stone façade, columns, and a bold, official seal, set against a backdrop of a bustling 1960s-era cityscape, representing the former headquarters of the United States Post Office Department in Washington, D.C., with a hint of nostalgia and a sense of transition, as if the agency is on the cusp of transformation into the United States Postal Service."