Located in the "seaside" area, these canals once served as a service for moliceiro boats and merchant salt shakers. Giving the city a unique beauty, it forms the basis of a prosperous economic development at the time of its foundation. The central channel, with the widest and deepest flow, runs through the city from the lagoon, where you can see beautiful examples of moliceiro boats. The S. Roque channel, a derivation of the central channel, separates the population from the immense tiled of navies and salt pyramids. The masters of shipbuilding from the 15th, 16th and 17th centuries extended along this artery, and today it is still possible to admire some of the haystacks that store the salt of the summer harvest. The Botirões and Mercantéis wharfs connect the S. Roque canal to the fish market area. It is therefore a pleasure to flank these arms of the estuary and delight in the picturesque ambience of these places.