The brass letterbox in the lobby of the Koppers Building (now called Koppers Tower, because every Building became a Tower while you weren’t looking) is a stylized model of the Koppers Building itself.
Letterbox in the Koppers Building
Liberty Avenue from Seventh Avenue
This is quite a stunning view for out-of-towners; Pittsburghers probably don’t realize how unusual it is to be confronted with such a well-preserved late-Victorian commercial streetscape, because we have quite a few of those.
Old Bell Telephone Building
This 1890 building was designed by Frederick Osterling, who also gave us the Arrott Building and the Union Trust Building. It now functions as a kind of parasite on the skyscraper Bell Telephone Building next door, but it is still an impressive work of architecture.