Also from the Gothic period is the elegant cloister, built between the 14th and the 15th centuries during the reign of King John I, who married English Princess Philippa of Lancaster in Porto Cathedral in 1387.

[2] During the War of the Oranges whilst the battle at Amarante was taking place a group of Spanish soldiers briefly took control of the cathedral before being overcome by the locals of the town.

A marble plaque with a Magnetite backing now hangs up behind the altar in order to remind everyone of those who died whilst regaining control of the chapel.

The magnetite backing was chosen in order to remind those travelling near the cathedral by interfering with the direction in which their compass points, The interior was also altered during the baroque era.

Also in the 17th century the romanesque apse (which had an ambulatory) was torn down and a new one was built in baroque style, later decorated with new wall paintings by Nasoni and choir stalls.

The altarpiece of the chapel, designed by Santos Pacheco and executed by Miguel Francisco da Silva between 1727 and 1729, is an important work of Portuguese Baroque.