The Silves Cathedral (Portuguese: Sé Catedral de Silves) is a former cathedral in the city of Silves, in the Algarve region of southern Portugal. A mosque, built during the Moorish rule of the Iberian Peninsula, was originally located in its current place, and was later mostly restructured and converted into a Catholic cathedral after the Reconquista.[1] Although having some Baroque characteristics, it is mostly Gothic in nature and it is considered to be the main Gothic monument in the Algarve and one of the most important landmarks in southern Portugal. It was classified as a national monument on June 29, 1922.[2]