Brimstone Hill Fortress is a historic military fortification located on St. Kitts, an island in the Caribbean. Built by the British in the 17th and 18th centuries, it was designed to protect the island from potential invasions. The fortress is situated on a volcanic hill, providing a strategic vantage point over the surrounding area. Today, Brimstone Hill Fortress is a UNESCO World Heritage Site, recognized for its well-preserved architecture and historical significance. Visitors can explore its impressive walls, barracks, and other structures, while enjoying panoramic views of the island and the Caribbean Sea.