Porto Cathedral, grand, Baroque-style, intricate stone carvings, ornate facade, Romanesque arches, vibrant stained-glass windows, towering bell towers, majestic dome, dramatic lighting, warm sunset ambiance, historic cityscape, narrow cobblestone streets, adjacent São Francisco Church, scenic Rio Douro River, distant Serra do Pilar Monastery, cloudy sky with a few wispy clouds, soft focus on the Cathedral's intricate details.