ALS architecture Australian-Lifeguard-Service beach beaches coast coastal emergency-service holidays hut lifeguard lifeguard-towers lookout ocean outdoor popular raised recreational-beaches rescue safety sand seaside shark-spotting shore sights structure supervise supervision surfers swimmer-rescue swimmers swimming tourism tourist tourists traditional travelling travels water-rescue water-sport-participants design magenta maroon pattern pink purple red textile violet beauty bird lake reflection relaxed river swan white swan agressive attack drinking Big Head Dordrecht Groothoofd hotel Merwede Noord Oude Maas Oude Maas river crossing Papendrecht rivier rivierenkruispunt water Zwijndrecht centrum Dijck downtown draai draaien Dyck horizon kijck kijck over den Dijck molen Noordendijk over skyline turn twist wind