The article gives the founding as 1108 in the text and groundbreaking as 1110 in the infobox. The present building began in the second half of the 12th century and ran into the 16th, with a Gothic cloister built in the 14th and 15th centuries. The infobox gives completion in 1737, though work continued afterward.
Nicolau Nasoni, an Italian architect, added a Baroque loggia to the side facade in 1736. A Baroque apse replaced the Romanesque one in the 17th century, and a new main portal replaced the Romanesque original in 1772. Valentim de Almeida made the cloister's Baroque azulejos from 1729 to 1731.
The central aisle has a stone roof supported by flying buttresses. It is an active Roman Catholic cathedral in the Diocese of Porto. The article names no client, dimensions or visiting details.

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