Hm. The city I’m living now didn’t exist when London fell, if we are talking about it falling instead of London. If we are talking about it falling now, hm.
Fallen Belo Horizonte (it means Beautiful Horizon) would not have any stolen rivers, because we don’t have any proper river, just a few streams. But I’m pretty sure that we would have plenty of stolen hills. Our important buildings are pretty small (specially at the center of the city), so I suppose that the Bazaar will have to replace our central bus station. The streets at the center of the city are perfectly straight and planned and the names of the street are themed, so it will be glaringly obvious that they were changed by the Bazaar’s arrival.
The city is also waaay bigger than London was at the 19th century, so I imagine that most of the Neath’s landmass is going to get a chunk of city falling on top of it, too. It’s a running gag that, since we live in a landlocked State, people here looove beaches. Hey, guess what? WE WILL HAVE OUR OWN BEACH NOW, EAT THAT ESPÍRITO SANTO.
Ahem, where was I? Oh, yeah, factions. Don’t really think we do have factions. About location, there is a giant University here, a kinda bohemian place full of pubs and expensive shops, the stadium in which Brazil lost from German (no hard feelings against the Germans, yet we will pretty much mourn it for the next one hundred years or so), a big artificial lake next to the rich neighborhood and… I dunno if there is any more location of importance.
It’s not an old city, it’s not too full of mysteries. My bithplace is an older city, which used to be full of asylums. Every rich and influential people would send there their mad relatives. It had scheming politicians, steep hills, mists at night and at dawn and a few landmarks (no river, though). It could have fallen in the 19th century or now, the only problem is that it has always been a very small city compared to London. Most of the previous cities would be visible yet. There wasn’t a lot of factions, but they could be the Asylum Crew, the Madmen (some of them used to roam the city), and the two opposing rich families that almost torn the city politics in half, the Costas and the Andradas. Rubbery Men would still be a thing, I guess, as would the Devils. Soldiers in lieu of the Constables, and that’s it I guess.