Wanderlust World Wanderlust World A polder is a tract of low-lying land reclaimed from a body of water—typically the sea, a lake, or a river—by constructing dikes and draining the enclosed area. The Netherlands is world-renowned for its polders, which constitute a significant portion of the country's territory. Iconic examples include the Beemster Polder (a UNESCO World Heritage site) and the Flevopolder, the world's largest artificial island.
Polders are created by building a ring dike, then pumping water out using windmills (historically) or modern pumping stations. The resulting land is exceptionally fertile, supporting intensive agriculture, housing, and infrastructure. This centuries-old practice exemplifies Dutch hydraulic engineering and remains central to the nation's identity and economy.