This fort was built around 1640 during the Restoration War. It features two bastions connected by walls. One of the walls has a staircase that leads to the upper terrace, where the lighthouse stands out due to its disproportionate size compared to the rest of the building. In the early 19th century, it underwent alterations to make it more militarily suitable.

A carved stone wall with a niche where you can see a Gothic-style Nossa Senhora is what remains, in the current Cathedral, of the former church of the Dominican convent (1423). Highlight for the side chapels, one with a limestone altarpiece, from the 16th century, and another with a carved wooden altarpiece where a statue of Nossa Senhora do Rosário appears. In 1719 a new Baroque façade was built and in the mid-18th century the high choir and roof were built, and the chancel was renovated. In 1860 the bell tower was built.