The World's Craziest Roads
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Passage du Gois, France
The Road: Linking the island of Noirmoutier to the mainland town of Beauvoir-sur-Mer in western France, the Passage du Gois is a 2.58-mile paved sandbar that’s flooded twice a day at high tide. When it isn’t submerged, this narrow causeway—flanked by fishing boats and littered with errant clumps of seaweed—is a slippery stretch indeed and especially treacherous on two wheels: in 1999, a domino-effect spill took down nearly half of the Tour de France’s peloton.
Insider Tip: Crossing is permitted only during the three-hour window surrounding low tide.