After the flooding of Zeeland in 1953 a lot of measures were taken to prevent another disaster.... One of them was building the Delta Works.
The Delta Works is a series of construction projects built in 1986 in the southwest of the Netherlands to protect a large area of land around the Rhine-Meuse-Scheldt delta from the sea. The works consist of dams, sluices, locks, dikes, levees, and storm surge barriers. The aim of the dams, sluices, and storm surge barriers was to shorten the Dutch coastline, thus reducing the number of dikes that had to be raised.
Along with the Zuiderzee Works, they have been declared one of the Seven Wonders of the Modern World by the American Society of Civil Engineers.
You can read more about it on these links... very interesting, I think...;-)