Looking for suggestions on a specific type of 3rd party product

[FormerFiend]

Apologies if this is the wrong forum for this, seemed the best fit.

As the thread title says I'm looking for a very specific type of 3rd party book; I'm looking for original campaign setting books that focus on single, specific cities, ideally those that while possessing a unique flavor, are designed to be slotted into existing or homebrew campaign settings with fairly little effort.

Any suggestions would be most welcome.

Edit: forgot to add that while my preference is for First Edition PF, hence why I'm using this forum, I'm also open to suggestions for such books printed under other rule systems, though the more fluff heavy these are, the better.

[Bjørn Røyrvik]

Freeport is a modern classic, which has a PF edition and some decent adventures published for it.

You can go old school and dig up a copy of Lankhmar or City-state of the Invincible Overload. for 1e.

For setting specific cities there are a few for SSS's Scarred Lands setting (3.0), like "Hollowfaust - City of necromancers" and "Sharn - City of the Mithral Golem". You should be able to adapt them fairly easily.

[Andre Roy]

It's not given, but the World's Largest City is a 700+ page supplement that describe a Port City with 16 disctinct neighborhood.

The Book is generic, mostly fluff and written with DD3.5 in mind. Each neighborhood is described, provided key NPC and adventures ideas. The Last bit is Stats for Every Classes from 1 to 20 to help flesh out NPCS

[FormerFiend]

Thank you both for the suggestions; I've actually got a few Freeport books & in fact that was the one that set the spark in my head to start collecting these. I'll be looking into the others. Much appreciation.

[Craig Bonham 141]

The City of 7 Seraphs by Lost Spheres Publishing. A Planar Metropolis specifically designed for exactly what you're asking for. It's a massive tome with incredible art and absolutely cool and interesting character options. Lots of fluff, lots of crunch.