Iron Age fortified settlement, semi-buried.

Strong built around the year 1640, during the war of restoration. Presents two bastions connected by walls. In one of its walls there is a staircase that connects the upper terrace where he stresses the taillight, for your immeasurable dimension in relation to the remaining building. In the early 19th century, suffered changes to put more apt to military level.

Bastioned fortress built at the end of the 17th century and beginning of the 18th century by Dom Pedro II. It was part of the defensive plan of the Portuguese coast and aimed to protect the entrance to the Cávado River. It has a rectangular plan and at each angle there is a bastion and a guardhouse. Between the walls, which are quite ruined, the Lighthouse Tower stands out.

Built in 1662, in a place called “do Queijo”, to protect the city from the Spanish Fleet. Surrounded by a moat, it presents watch-boxes at the corners. Inside it is the governor’s residence at the time and a chapel. Nowadays it is the stage for many temporary exhibitions.

Admire the magnificent ashlar masonry with which Francisco Arruda decorated the tower and go up to its 30 meters to view the vast territory you have just visited. At the east side is a sculpture that symbolizes the hydroplane that Gago Coutinho and Sacadura Cabral used to make the Atlantic south aerial crossing, on March, 1922.

Also called Strong Marquis de Sá de Bandeira, by Decree of 1901, consists of circular redoubt lined by three floors with an equal number of batteries covered with concrete dome fireproof. Inside there is a large cistern. Was classified as 1st class war Square.

Old fortification dating from the 18th century, of which only some ruins remain. The entire complex was built in stone masonry, except for the area next to the sea, built in reinforced concrete. Inside, there are remains of an old lime kiln, dating back to the end of the 19th century.

Construction of polygonal plant, bastion, turreted in angles. Strong who served military functions until the 19th century, when it passed the only control the input and output of small boats. Inside there are remnants of bunkers and supplies. It was built in the 17th century and, in 1999, adapted by architects Paul Lobo and Amedeo Mandolesi to hotel and restaurant.

A fortress built during the reign of Dom João IV, although the exact date of its primitive construction is unknown. There are still several vestiges of that construction, namely a gate with an inscription and the royal arms.