La Rochelle is a city dating from the 9th century in the department of Charente-Maritime, France. From the 14th to 17th century, it was France's leading port for trade across the Atlantic to Canada and the French West Indies. It's often called "la ville blanche" (the white city) for its limestone buildings: they're handsome in any weather, but brilliant when the sun shines down from a big blue Atlantic sky.
The city is centred around the old port, Vieux Port, with three great defensive towers. 3 km south, Les Minimes is a new area built on reclaimed land. In 2017, its population was 76,000.La Rochelle is linked by a bridge to the resort island of Île de Ré, some 30 km long. Other islands are Île d'Aix, Île d'Oleron (usually accessed by road via Rochefort), and the one you've seen on TV, Fort Boyard.