The market's roots lie in the 1960s and 1970s, in a cramped walled lot near an old cemetery in the Slobidka district, open only on Sundays and later Saturdays. It was hopelessly small, barely 150 meters by 250, and the crush of bodies gave the place its lasting association with shoving. Getting there was an ordeal: until 1966, shoppers faced a two-kilometer walk from the nearest tram stop, and the best goods vanished by late morning, so arriving at dawn was essential. Officially it was a flea market for used goods only, but clever traders skirted the rules by selling new items straight from their hands as they walked, a practice woven so deep into local life that the phrase for it, z ruk, from the hands, became part of the market's language.

Everything changed in 1989, during the loosening reforms of Perestroika, when the market was relocated to open ground at the seventh kilometer of the Odesa–Ovidiopol highway, giving it the name it still carries. Freed from its old constraints, it exploded. In place of ground displays came thousands of shipping containers, the humble steel boxes of global trade repurposed into a permanent marketplace. Prime containers can rent for six thousand dollars a month or more, and ordinary buildings have sprung up among them. By the mid-2000s daily sales were estimated in the tens of millions of dollars. With a staff of over a thousand, mostly guards and janitors, the market became the largest employer in the whole region.

To walk the Seventh-Kilometer is to enter a place governed by its own logic. The traders are independent, and the goods run the full range, from authentic merchandise to cheap imports and counterfeit luxury labels. Questions about salaries, rents, taxes, or even last names tend to be met with a shrug or a wary silence. One observer described it as a sinecure for the rich and a trade haven for the poor, a single sprawling economy where fortunes are made and modest livings are scratched out side by side. The market has drawn the attention of the state, too: in 2005 Ukraine's president announced plans to bring its vast shadow economy under tax law, a reminder that even a state within a state answers eventually to the real one.

There is something genuinely astonishing about the scale of the place, a testament to the raw commercial energy that Odesa has channeled for two centuries. Where the historic Pryvoz market downtown trades in produce and gossip, the Seventh-Kilometer trades in sheer volume, an ocean of goods that seems to stretch past the horizon. Visitors come as much to marvel as to buy. Standing in one of its long metallic canyons, watching the endless flow of buyers and sellers, you feel the pulse of a certain kind of freedom, unpolished and unregulated, that rushed in when the old order fell away and never quite left.