[Austinlee]

Incredible pics, Lith. Even I wasn't aware of 85% of these architectural and artistic gems.
You are right, many of these structures will not survive the demographic shift as the older generations die off.

My dad who hauled steel out of all of the huge, impressive steel mills around Pittsburgh from 1970-1990's regrets not taking photos of the interior and exterior of these mills which each one was the size of a city, skyline of smokestacks and blast furnaces and more. There were over 200 steel mills around Pittsburgh. There are now two active steel mills - Braddock and Midland.
He said he never would've imagined they would close and be torn down so quickly and methodically.

The same could happen with the churches.