Flood Killed 1,800 People In Holland

In 1953, a major flood killed around 1,800 people in Holland and authorities realised a sea defence had to be built.
The answer was to block certain estuaries leading to Antwerp and Rotterdam.
The basic premise was very simple – minimise the exposure of the dykes to the sea.
But the execution was amazing, and the scale of it enormous – the whole coastline had to change.
In the Odense area, the sea defence is designed for a one-in-10,000 year surge.
In England, the only comparable construction, The Thames Barrier, is designed for a one-in-1,000 year surge.
With sea levels expected to keep rising, work to broaden coastal dunes and strengthen sea and river dykes is estimated to continue for another 100 years.