A proper Roman forum. Crammed full of everyone from your average Joe/Jen, spergs on soapboxes shouting madness, the occasional drooling retard who just shits on the street, folks scratching memes into the wall, and once in a while some obsessive fanatic that everyone decides to start stabbing on mass.
Imagine an asshole the size of a vulcano crator, and over it, to smell and discuss the fumes coming from it is a rickety bridge-like city filled with degenerates and lowlifes.