Penafirme Convent was an ancient Augustinian monastery located on the border of Póvoa de Penafirme, in the parish of A dos Cunhados e Maceira, Lisbon District, Portugal. Although the convent is largely in ruins as a result of the 1755 earthquake that affected large parts of Portugal, parts of the church and monks’ cells remain intact. Close to the sea, the ruins are slowly being overtaken by sand dunes.