The Bridge of Prado (Ponte do Prado) over the Cávado River was originally a Roman bridge. It was re-constructed during the 16th century when the original had been destroyed following flooding and consistent use. There are few vestiges of the Roman bridge.
The bridge's exit (to the north) fronts the Praça do Conselheiro Sousa Lima, a gardened area, the site of a 16th-century pillory marking Prado's historical importance as a municipality until the 19th century.
The flat-top shallow cantilever bridge consists of nine Roman arches that progressively increase in size the closer to the centre of the span, with the three largest arches slightly peaked. Eight triangular abutments protect the base of the bridge from debris, while polygonal structures downstream act as reinforcements.
References:The Cathedral of Saint Mary Major, often called Lisbon Cathedral or simply the Sé, is a Roman Catholic cathedral located in Lisbon, Portugal. The oldest church in the city, it is the seat of the Patriarchate of Lisbon. The cathedral has survived many earthquakes and has been modified, renovated and restored several times. It is nowadays a mix of different architectural styles.
The site where it stands was the principal mosque of Lisbon when it was an Arab settlement. The construction of the cathedral started around 1150, three years after the city was conquered from the Moors during the Second Crusade. Shortly after the victory the English knight Gilbert of Hastings was named bishop of the city of Lisbon.
One good reason to visit the Cathedral is to visit its charming cloisters located in the back. There are several tombs in the cathedral, the most notable of which is the beautifully sculpted tomb of Lopo Fernandes Pacheco and his wife.