Vereniging tot Behoud van Natuurmonumenten in Nederland (English: Society for Preservation of Nature Monuments in the Netherlands), also known as Vereniging Natuurmonumenten, is a Dutch nature conservation organization founded in 1905 by Jacobus Pieter Thijsse and Eli Heimans, that buys, protects, and manages nature reserves in the Netherlands. It is a member of the European Environmental Bureau. The first area that the organization purchased in 1905 was to protect the Naardermeer, southeast of Amsterdam. It had 355 sites under its management in 2010, with a total area of 1,029.51 km2 (397.50 sq mi). The largest is De Wieden (58.47 km2 (22.58 sq mi)); the smallest is Fort Ellewoutsdijk (0.01 km2 (0.0039 sq mi)). More information...
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