The Fort of S. Roque is an example of modern military architecture with bulwarks, consisting of four bulwarks arranged at the vertices of an internal polygon that forms a rectangle with an access door to the NW. It was built by order of Manuel Azevedo Fortes, governor of Praça de Castelo de Vide, and was built between 1705-1710.

This construction is made of stone masonry with lime mortar, steep on the outside and embankments on the inside. The bulwarks are pointed with solid brick guardhouses and plastered. The materials used are: stone (granite), brick, lime, hydraulic calculus, sand and earth. The Fort of S. Roque, as well as all the fortifications of Castelo de Vide, underwent several interventions, the last of which in 2002.

National Monument.

Source: https://castelodevide.pt/2026/forte-de-s-roque