The main town is Puerto Barrios, a former United Fruit Company banana port and, for tourists, the departure point for boats to Livingston and trips to the area's other major attractions. Castillo de San Felipe is a fortress built in 1652 as a defense against pirates. When pirates left the area, it became a prison and today it is a well-preserved tourist attraction. Lake Izabal, the largest lake in Guatemala, is surrounded by mountains and full of perch, tarpon and other game fish.