For centuries East Anglia and the Netherlands have fought a common enemy - sea and river floods. Paul Heiney travels to the Netherlands for a look at how the acknowledged masters of water management have coped with assaults from sea and river floods for centuries. He visits the Kinderdijk site, where 19 water-pumping windmills still stride across the landscape; stands on land newly reclaimed from the former Zuider Zee; and sees the massive storm surge barrier that was the Dutch response to the floods of 1953.