The Tanner’s District is located near the windy edge of the Schism, in the part of Low Side closest to the Tumbledown, mostly because it smells so awful that no one wants them performing their business adjacent to anywhere nicer. It’s basically as bad a neighborhood as you can find before it stops counting as part of the Principality.
They tan all sorts of hides there, from cow and pig to drake and wyvern. Some leather workers ply their trade not far from the stinking vats where hide is turned into something stronger, but most make enough money to live and work far from the stench.
Others, though, are less fortunate, and some odorous individuals live in the understandably cheap housing around the tanneries, large and small.