Both religious and secular architecture show the influence of different cultures on the island. Some buildings are important enough to be declared as Cultural Assets in different categories (the equivalent of a Listed Building). Manor houses with central courtyards or wooden balconies stand as silent witnesses to a glorious past. Churches were built with corners dressed with volcanic stones, valuable altarpieces; Mudejar-style ceilings; Latin-cross floor plans and round arches dividing naves. These are elements present in the churches and manor houses on the island. The Flemish art on the island deserves a special mention, as it includes some very valuable pieces.