Arco de la Rosa is Cadiz' old medieval door.
It was the western gate of the city wall built in the thirteenth century by Alfonso X the Wise. This wall was masonry and lime with battlements and towers.
The wall was made along three lines facing the west, north and east; the southern part was uncovered as it faced the sea.
Called in those times the Arc de Santiago, this gate gave this section of the Old Town its name.