Noirmoutier…this little island with the “Passage du Gois”. A road that is about 5 kilometers long and that get flooded two times a day with the tide. Must be vigilant driving during the correct times. Many tourists still have accidents every year as they think they can “beat” the tide. A great island I suggest to go visit in the North West of France.
For the history buffs out there it was there that was recorded the first Viking Raid in the Europe Continental.
Every year there is a race there that start at the high tide and you have to run the 5 kilometers before the tide comes back.