A residential sprawl of stacked apartments, converted warehouses, and buildings that grew into each other over centuries until the original property lines became meaningless. The Warrens house most of Nod's working population, species mixed by proximity and economics rather than choice. A Kaarn metalworker might share a wall with a human cobbler and a Theriae family running a laundry service from their front room. The streets are narrow enough that opposing balconies nearly touch, strung with electrical cable, clotheslines, and the occasional Tinker-rigged data wire. Neon signage in competing scripts competes with the dim glow of the Lamplighters' wards for the right to illuminate the ground level. The air smells like cooking grease and ozone.
The Warrens have no dominant culture because no one group ever held the district long enough to impose one. A block of apartments built by Kaarn settlers centuries ago, their wide doorframes and variable ceilings still intact, now houses a predominantly human community whose residents cook pepper soup on the same landings where their neighbors prepare dumplings stuffed with Nod-grown fungus and Domain-sourced meat that tastes like pork. The next street over, a Theriae family of serpentine lineage runs a bathhouse whose water is heated by alchemical means and whose customs are borrowed from hammam tradition filtered through two centuries of adaptation. A Skulk market occupies an alley too narrow for Kaarn to enter, its stalls selling repair services, salvaged components, and skewered things that smell far better than they look. The lingua franca in the Warrens is Nodspeak, a creole that borrows grammar from a dozen human languages and vocabulary from at least three non-human ones. Most residents speak it alongside whatever their parents spoke at home. Some speak nothing else.
Electrical power in the Warrens is whatever the residents can arrange. Tinker-built generators running on alchemical fuel, taps into the nearest Ringhollow power line (legal or otherwise), and the occasional thermic fungus node that someone has wired into their building's system. Outages are constant. Most households keep candles, oil lamps, and charged batteries or arcane stones as backup, and the sound of a generator coughing back to life after a blackout is one of the district's more familiar noises.