Towering behind rows of boats in Antibes’ harbour, Fort Carré looks out over the Côte d’Azur. The fort was built in the 16th century to protect the border between France and the neighbouring county of Nice and saw its share of battles. After Nice became part of France it was declassified and used as a sports college for soldiers, who used to abseil down its walls, before opening to visitors. It’s claim to fame is that Napoleon was imprisoned there during the French Revolution, but you might recognise it as the villain’s lair from Bond film Never Say Never Again. Fort Carré means square fort, but it’s actually star-shaped after military architect Vauban added extra defensive walls. It’s not until you get up close (unless you’re arriving at your superyacht by helicopter) that you can see the four pointed bastions. We headed inside through the only tiny wooden door and climbed up to the battlements. The inside is mostly empty but the walls are a perfect vantage point, with Antibes on one side and Nice across the Baie des Anges on the other.