Almost all cities of any size, population 100,000 and up, have (or had) neighborhoods such as that one. Almost all non-governmental cities were built by (or significantly expanded by) the capitalist zeal and hard work of industrialists, who always built such neighborhoods for themselves and their families. This is one of the reasons that, as a history buff, I love to tour old cemeteries. Even if the elegant neighborhoods are gone, the magnificent tombs and headstones of the intrepid men who built those neighborhoods -- and much of the city -- still exist.Must be a rare mansion estate within the city limits I'm guessing. Didn't know St. Louis city had estates like that, but guess I'm not too surprised since it was once a roaring powerhouse of a city decades ago.
If Antifa prevails, it will usher us into a new dark age where all such history is lost.