The country comprises a continental mainland and numerous islands located off the Colombian coastline in the Caribbean Sea. G. Colombia possesses borders with Brazil and Amazonia Republic to the south, and the Incan Empire to the west. Trinidad and Tobago, Grenada, St. Lucia, Barbados, Curaçao, Bonaire, Aruba, Saint Vincent and the Grenadines and the Leeward Antilles lie just north, off the Colombian coast. Its size is 2,106,445 km² with an estimated population of 28,200,000. Its capital is Caracas. Falling within the tropics, Great Colombia sits close to the equator, in the Northern Hemisphere.