Lorentzsluizen

The Lorentz sluices mark the gateway between the IJsselmeer and the inland waterways of Friesland — a working piece of Dutch water-management history named after physicist Hendrik Lorentz, who led the calculations for the Zuiderzee Works. You anchor off here while waiting your turn to pass through, with the flat Frisian landscape stretching out around you. It's a quietly industrial spot, but watching the locks in action gives you a real sense of how the Dutch shaped this entire coastline.