Large stone wall rosea in the shape of a polyhedron. Has canhoteiras and bunkers that denote great simplicity and rigour. Barracks and other dependencies are organized in a set of several volumes.

Small strong bastions of regular plant considered an important example of military architecture of the 17th century. Built after the restoration, to the present day without architectural modifications. It was part of the fortified line that goes from Peniche to Cascais and barra do Tejo.

Replica of the old São João Batista Fort located there, built in 1730, due to the pirate attacks on Porto Moniz. In 1998, the town's Municipal Council acquired the ruins, completely restoring it and giving it its original appearance, in order to house the Madeira Aquarium.

This 17th century building is shaped like a four-pointed star, each protected by guardhouses. The vestiges of this defensive fort can be seen on Avenida Doutor Antunes Guimarães, Rampa do Castelo and Rua de Santa Catarina. It began to be built in 1638, but in 1655 it was still not completed. In 1832, during the civil war, it underwent some modifications and, in the 20th century, it was handed over to the Captaincy of the Port of Leixões, which carried out works to house its staff there.

These fortifications dating from the 17th century and were built to cope with struggles for independence. Was one of the most important strongholds in the country. Currently there are four doors and twelve bastions, built up in different times. On the terraces you can see old pieces of artillery. It was remodeled in 1640.

Located next to praia da Consolação, was built in the mid 17TH century. The door is surmounted by the Royal Arms and the bridge over the moat is supported by two barrel-vaulted galleries.

The fortress of Nossa Senhora da Luz has a portal with pilasters and a pediment heavy denticuladas. The coat of arms of Portuguese Crown evokes the overlapping of past wars.

Historical reference and emblematic element of the city, it was built at the end of the 16th century as part of the defense system of the Mondego mouth. It has a triangular structure, a half bastion and two irregular bastions. Inside there is a small chapel dedicated to Santa Catarina de Ribamar, and a lighthouse. Currently, within its walls, there is also a tapas and cocktail restaurant.

A fortress located by the cliff, near the Museum Count Castro Guimarães. The date of its primitive construction is not identified and only an inscription and the royal arms remain of it. It was deeply restored when it was given to the Sea Ministry, in 1868, to build a lighthouse there.

An imposing fortress that still has the divisions for the quarters, the cisterns, the residencee of the governor, the dungeons and the private chapel. It has four baluarts (two higer and two lower) with canon places and cylinder shaped watchtowers.