Built in the late 13th/early 14th century, this was the Collegiate Church of St. Peter.

It was destroyed in the 1755 earthquake, and all that remained from the original building was the carved and gilded wooden high altar with its throne (1690-1705) and the bell-tower with its stone spiral staircase. Its later reconstruction was quite simple, although it has an excellent altarpiece of St. Peter by the painter João da Costa.

The painter Josepha de Óbidos is buried here, as is the religious speaker Francisco Rafael Silveira Malhão.