Landscape
The Netherlands is predominantly low-lying, with parts of the country below sea level. Rivers including the Rhine and Meuse spread toward the North Sea through a broad delta. Dunes, dikes and engineered water systems help define the landscape.
Polders are areas where water levels are managed to keep land usable. The Wadden Sea, farther north, contains tidal flats and islands that change appearance with the tide. These environments contrast with densely settled inland and coastal districts.

