Most of the Belize District is in the east central mainland of Belize. The Belize District also includes offshore islands, including Ambergris Caye, Caye Caulker, St. George's Caye, Caye Chapel, English Caye and Goff's Caye. Ambergris Caye and Caye Caulker are two of the country's main tourism areas. The longest river in the country, the Belize River, passes through the district and joins the Caribbean Sea along its coast. The Northern River, Sibun River, and Manatee River are also in this District.