This imposing edifice, which was completed in 1821, is set one street away from the seafront. It was used as a prison from 1910 to 1984, when it became part of the country's museum system. Today, it is a central part of the town as it hosts conferences, exhibits, and theater productions. If you have a few moments, climb up to the battlements for some great views of Lamu, and pop into the vegetable and meat markets, which are just to the left of the fort. If you see a man pressing sugarcane, limes and ginger to make juice buy a glass—it's delicious.