Galle Fort is a 17th–century fort located in the city of Galle in southern Sri Lanka. It was built by the Portuguese and later taken over by the Dutch, and is now a UNESCO World Heritage Site. The fort is surrounded by a moat, and its walls are made of limestone and coral. Inside, visitors can explore its cobblestone streets, museums, churches, and mosques. The picturesque architecture and coastal views make Galle Fort a popular tourist destination.