The Church of San Marcos, located in the parish of São Lázaro, dates back to the 16th century. XVIII and was built according to the Carlos Amarante project.
The church has a Baroque style, and in its exterior decoration stand the statues of life-size apostles that mark the rhythm of the upper balustrade. In the middle of the church façade, in a niche, we can see the image of Saint Mark.
D. Diogo de Sousa is buried in the main chapel of the Church, in a tomb of white jasper worked in mosaic.