Wainwright Building

First steel framed building or «skyscraper» from 1891 is in St Louis & still used today.
There are few earlier «skyscrapers» that used iron for an internal skeleton for support, but they have not lasted. (Sorry Chicago)
Each time I see this building & think that it was completed in 1891– I am amazed. For architecture, The Arch & Eads Bridge are more well known. But, this little beauty marked a huge change in the skyline of cities.
At closer inspection, the quality and intricate mason work on the outside impresses me.