The Oxidian Market sprawls across a three-block elevated platform originally built to service a rail maintenance yard, now a permanent fixture of GLMZ's gray economy. Built upward over decades from a single row of stalls into a layered, chaotic structure of permanent vendors, semi-permanent stalls, and itinerant traders, the Market has developed its own architecture — a self-organized accumulation of shipping containers, prefab panels, salvaged building materials, and improvised platforms that rises four stories in places and contains no right angles by accident.