infrastructure and with the largest number of double-lane highways. Due to the Andes Mountains, Amazon River and Amazon Forest, there have always been difficulties in implementing transcontinental or bioceanic highways. Practically the only route that existed was the one that connected Brazil to Buenos Aires, in Argentina and later to Santiago, in Chile. However, in recent years, with the combined effort of countries, new routes have started to emerge, such as Brazil-Peru (Interoceanic Highway), and a new highway between Brazil, Paraguay, northern Argentina and northern Chile (Bioceanic Corridor). There are more than 2,000 airports in Brazil. The country has the second largest number of airports in the world, behind only the United States. São Paulo International Airport, located in the Metropolitan Region of São Paulo, is the largest and busiest in the country - the airport connects São Paulo to practically all major cities around the world. Brazil has 44 international airports, such as those in Rio de Janeiro, Brasília, Belo Horizonte, Porto Alegre, Florianópolis, Cuiabá, Salvador, Recife, Fortaleza, Belém and Manaus, among others. Argentina has important international airports such as Buenos Aires, Cordoba, Bariloche, Mendoza, Salta, Puerto Iguazú, Neuquén and Usuhaia, among others. Chile has important international airports such as Santiago, Antofagasta, Puerto Montt, Punta Arenas and Iquique, among others. Colombia has important international airports such as Bogotá, Medellín, Cartagena, Cali and Barranquilla, among others. Other important airports are those in the capitals of Uruguay (Montevideo), Paraguay (Asunción), Peru (Lima), Bolivia (La Paz) and Ecuador (Quito). The 10 busiest airports in South America in 2017 were: São Paulo-Guarulhos (Brazil), Bogotá (Colombia), São Paulo-Congonhas (Brazil), Santiago (Chile), Lima (Peru), Brasília (Brazil), Rio de Janeiro (Brazil), Buenos Aires-Aeroparque (Argentina), Buenos Aires-Ezeiza (Argentina), and Minas Gerais (Brazil). About ports, Brazil has some of the busiest ports in South America, such as Port of Santos, Port of Rio de Janeiro, Port of Paranaguá, Port of Itajaí, Port of Rio Grande, Port of São Francisco do Sul and Suape Port. Argentina has ports such as Port of Buenos Aires and Port of Rosario. Chile has important ports in Valparaíso, Caldera, Mejillones, Antofagasta, Iquique, Arica and Puerto Montt. Colombia has important ports such as Buenaventura, Cartagena Container Terminal and Puerto Bolivar. Peru has important ports in Callao, Ilo and Matarani. The 15 busiest ports in South America are: Port of Santos (Brazil), Port of Bahia de Cartagena (Colombia), Callao (Peru), Guayaquil (Ecuador), Buenos Aires (Argentina),