In the Jura Mountains, there are plenty of lakes with pleasant spots to take the family swimming. Thanks to the lifeguarded beaches and a host of activities, your children can safely have fun in the water and will never get bored. So which lake will it be? Chalain, Vouglans, Clairveaux, Nantua or Malbuisson? The choice isn't an easy one, so check out our TOP 5 to help you find the right lake for you and your family.