First built in 1248 as a Romanesque basilica with a nave and two aisles, the cathedral gained its current appearance in the 15th century as a Gothic structure, though the Baroque chapels date from the 16th and 18th centuries. Inside, one is treated to the sight of a lavishly adorned altar, which lights up the place all on its own.
The 57 metre high classicist designed bell tower dates back to the end of the 18th century as the primarily 76-metre high bell tower built by Pavel Porta in the year 1623 was struck by lightening.
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.