Zubizuri Footbridge, designed by Santiago Calatrava, Nervion River, Bilbao, Basque Country, Spain, Europe

zubizuri footbridge bilbao nervion river basque country santiago calatrava architecture design bridge walk pedestrians scenery cityscape outdoor nature travel tourism urban landscape sunny day steel cables structure engineering spain europe relaxation exploration sightseeing culture heritage paths tranquility modern daylight people biking strolls connections riverbank viewpoints greenery leisure city life iconic structure accessible roads bridges town