Bolivia is located in the central zone of South America, between 57°26'–69°38'W and 9°38'–22°53'S. With an area of , Bolivia is the world's 28th-largest country, and the fifth largest country in South America, extending from the Central Andes through part of the ''Gran Chaco'', Pantanal and as far as the Amazon. The geographic center of the country is the so-called ''Puerto Estrella'' ("Star Port") on the Río Grande, in Ñuflo de Chávez Province, Santa Cruz Department.