Madurodam is a tourist attraction in the Netherlands that shows different aspects of Dutch life in 1:25 scale. It raises money for Dutch charities, as a memorial to George Maduro, a Jewish law student and Dutch resistance hero in WWII who died at Dachau. They’re auctioning off one of the models from their miniature Schiphol as a fundraiser for Red Cross relief efforts in St. Maarten.
More details here:
And because I know you all want to see it, here’s an image of 1:25 Schiphol from Wikipedia: