In this trip we cross the Enclosing Dike used to cut off the former Zuiderzee from the North Sea.  We also visit dikes and settlements along the Frisian coast.  Here we see patterns of sequential land reclamation using sea dikes.  

City of Franeker in Friesland.

The Enclosing dike - a 30 km long dam, turning the salt water Zuiderzee into the freshwater IJsselmeer.