oyster stone -piedra ostionera- ashlar rigging on the facade of a building in rota, cadiz, spain

oyster stone piedra ostionera ashlar rigging façade building rota cadiz spain facade -piedra ostionera- construction material used architecture towns province andalusia rigging house material façade abstract pattern molding building construction architecture important monument stone ashlars ostionera wall texture surface rock textured rough brown background typical facade closeup sandstone sedimentary porous seashells cadiz puerto real quarry santa maria fernando chiclana rota conil chipiona sanlucar barrameda