Santa Casa da Misericórdia
The DGEMN "Direcção Geral dos Edifícios e Monumentos Nacionais" ("General-Directorate for Buildings and National Monuments") began restoration work on the keep tower in 1920. Between 1940 and 1950, the keep tower was used as a support building for the hospital of the Santa Casa da Misericórdia. During this period, it functioned as an isolation centre for patients infected with tuberculosis. Around 1961, the fortification walls around the parochial residence were in danger of collapse.