Dubrovnik's Old Town has no farmland inside its walls, and never did. Every fig, oyster and jar of olive oil that reached the Republic of Ragusa arrived by cart from Konavle, by donkey from the Pelješac slopes, or by boat from Ston's salt pans — a supply chain that shaped the city's cooking long before anyone called it cuisine. A dubrovnik old town food tour follows that same inherited geography, street by street. The Republic governed here for four and a half centuries, and it governed food closely. Ston's salt works, operating since Roman times and expanded under Ragusan rule in the fourteenth century, financed a third of the state treasury. Grain was stored in the Rupe granary, sixteen dry wells carved into bedrock, still standing on the western slope. Quarantine — the world's first, declared in 1377 on Lokrum and later at Lazareti — was as much about protecting trade in wine, wax and cheese as about protecting bodies. What survives is a working larder rather than a museum of one. Ston oysters, harvested in Mali Ston Bay since antiquity, remain graded by the same beds. Pelješac reds — Plavac Mali from the Dingač and Postup slopes — carry the steep-terrace tannin that Dalmatian cooking is built around. Pag and Dubrovnik-region cheeses, brudet stewed from the day's catch, arancini candied from Konavle orange peel, rožata set with rose liqueur: the dishes are regional, narrow and specific. Croatia's Dalmatian coast diet sits inside the UNESCO-inscribed Mediterranean diet, a designation that reads less like a marketing line here than a description of the market at Gundulićeva poljana on any weekday morning. The architecture frames it. Stradun's polished limestone, relaid after the 1667 earthquake, runs 300 metres between two fountains. Onofrio's Great Fountain, completed in 1438, delivered water from Šumet twelve kilometres away — the precondition for a dense walled city that could feed itself. The Franciscan pharmacy, dispensing since 1317, still holds its apothecary jars. Guided dubrovnik old town food tour tours read these as infrastructure, not scenery: cistern, granary, fountain, market, table. Entry to the Old Town itself is free — 0 EUR — and its lanes are open around the clock, from 00:00 to 23:59, every day of the week. The food, and the guides who explain it, are the bookable part. That is the useful distinction: the city is public, the knowledge is not, and a well-run dubrovnik old town food tour exists to close the gap between walking past a doorway and understanding what has come through it for six hundred years.