Marg is a city of squat, stone buildings, many taking up entire city blocks. The first structures in the city were warehouses along the river, and the city spread out from the riverbanks based on the whims of the slaver princes, not any sort of central planning. The swampy ground near the city breeds mosquitoes and other insects, which gather in immense clouds to become an actual danger, not just an annoyance. To keep the insects at bay, Marg relies on the smoke from pyres built at strategic points throughout the city. (Slave labor brings a steady supply of fuel to the pyres, of course.) Those pyres put the entire city under a pall of smoke that keeps the mosquitoes away, and they give everything in the city a reddish cast. Some wonder whether the smoke is worse than the mosquitoes, but once they’ve seen the insect swarms darken the skies outside the city, they happily accept the discomfort of smoke inhalation.
An Inner wall encircles the city, with a perimeter wall housing the various slaver companies staging grounds, slave pits, slave markets and other nefarious trades.