These Roman saltworks are located in the city of Vigo, in the northwest of the Iberian Peninsula, and they were part of a large industrial complex, dedicated to the production of sauces and salted fish. To this day, they are the best-preserved solar evaporation marine saltworks evidences in the Roman world, making it possible to know the entire production cycleBased on ceramic contexts and C14 data, we have concluded a period of use around the 1st-3rd c. AD, which falls completely within what is known as the Warm Roman Period.The architecture of the salt complex is articulated through different types of ponds, of various dimensions and construction characteristics. They use different materials for their construction: stone, ceramics, silt, clay, wood or sand. Its characteristics and dimensions are in accordance with its function within the salt production cycle: decanters, evaporators and crystallizers. Other architectural elements complete the ensemble and help to understand its functioning in detail.Knowledge of the architecture, constructive techniques and morphology of these saltworks has made it possible to identify others even when excavated on small surfaces, thanks to the archaeological indicators that the study of these salt pans allows us to define.