Our Pick
Posted on @rawstates
Philadelphia City Hall completed
1901
Penn Square, Philadelphia
Toniklemm · CC BY-SA 4.0 · Wikimedia Commons
Thirty years in building, and the tallest habitable structure in the world for a few years. A gentleman's agreement kept every building below William Penn's hat on its tower until 1987.
That was 1 of the hidden places.
Location: documented spot
This place has its own thread on r/rawstates
Read what people are saying about it, or add your own.