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</html><description>Open Monumentendag is de tweede zaterdag en/of tweede zondag in september. Dan zijn duizenden monumenten in Nederland gratis toegankelijk voor publiek. De opengestelde monumenten zijn te herkennen aan de Open Monumentendagvlag zoals hiernaast afgebeeld. In 1987 werd, in navolging van Frankrijk, de Open Monumentendag in Nederland geintroduceerd. Een dag die in eerste instantie alleen gehouden &hellip; Lees verder ""</description></oembed>
