Fodor's Expert Review Fort Napoléon
Also known as Louis Castle, this fort was built in 1777 by order of King Louis XVI, and was first known as a military tower. However, it was never used for military purposes, although it did serve as a penitentiary in wartime. The museum here is notable for its exhaustive exhibit of the greatest sea battles ever fought. You can also visit the well-preserved barracks and prison cells, or admire the botanical gardens, which specialize in cacti. This is a hill climb, and if you decide to walk, allow 30 minutes from the village, wear comfortable footwear, and bring water. You will be rewarded with outstanding views of the bay and neighboring islands.