Cuba is an island nation in the Caribbean Sea. Cuba's area is 110,860 km² (42,803 sq mi) including coastal and territorial waters with a land area of . This makes it the eighth-largest island country in the world. The main island (Cuba) has of coastline and of land borders—all figures including the U.S. Navy's Guantanamo Bay Naval Base. Cuba lies west of the North Atlantic Ocean, east of the Gulf of Mexico, south of the Straits of Florida, northwest of the Windward Passage, and northeast of the Yucatán Channel. The main island (Cuba), at , makes up most of the land area and is the 17th-largest island in the world by land area. The island is long and across its widest points and across its narrowest points. The largest island outside the main island is the Isla de la Juventud (Isle of Youth) in the southwest, with an area of . Cuba is an archipelago of islands located in the Caribbean Sea, with the geographic coordinates 21°3N, 80°00W. Cuba is the principal island, which is surrounded by four main groups of islands. These are the Colorados, the Sabana-Camagüey, the Jardines de la Reina and the Canarreos. The main island consists mostly of flat to rolling plains. At the southeastern end is the Sierra Maestra, a range of steep mountains whose highest point is the Pico Real del Turquino at . Havana is the largest city and capital; other major cities include Santiago de Cuba and Camagüey. Better-known smaller towns include Baracoa, which was the first Spanish settlement on Cuba, Trinidad, a UNESCO world heritage site, and Bayamo. Physical geography Cuba is located 77 km (48 mi) west of Haiti across the Windward Passage, 22 km (13.6 mi) south of The Bahamas (Cay Lobos), south of the United States (Key West, Florida), 210 km (130.5 mi) east of Mexico, and north of Jamaica. It was made in three stages. Cuba is the largest country by land area in the Caribbean. Its main island is the 17th-largest island in the world by land area. The island rises between the Atlantic Ocean and the Caribbean. It is bordered on the north by the Straits of Florida, on the northeast by Nicholas Channel and the Old Bahama Channel. The southern part is bounded by the Windward Passage and the Cayman Trench, while the southwest lies in the Caribbean Sea. To the west, it reaches