Forte de São João Baptista

Its construction began in the end of the XVI century, being concluded in the next century. In 1832-33, during the Porto siege, it served as a storing and protection spot. Fortification with defence elements placed at the angles and meant to protect it from flank attacks, with a big defensive capacity. In the beginning of the XIX century, an urban change covered the set with rocks, withdrawing the castle from the mouth.