ADVENTURE VIRGIN ISLANDS

God made the world, so the old saying goes, but the Dutch built their country themselves. For more than a thousand years they’ve been changing, shaping and engineering the landscape and now – just 12 years after a Dutch prime minister famously declared that the Netherlands was finally finished – they’re at it again. And that’s great news for sailors.

Marker Wadden is the newest part of the Netherlands. It’s an entirely artificial archipelago of five islands comprising some 2,500 acres in the northeast corner of the Markermeer, roughly 21 miles northeast of Amsterdam. As the name suggests, it’s built to look like a freshwater version of the wild, inaccessible parts of the Waddenzee with a spectacular landscape of towering sand dunes sheltering tranquil lagoons, reed beds, mud flats and great swathes of wetland plants. Fish spawn and shrimp thrive in the shallows. More than 500 avocets, along with many other endangered birds, have already made the islands their home.

Unlike most conservation zones,