9. Ruta, Argentina
National Route 40, also known as RN40 or “Ruta 40”, is a route in western Argentina, stretching from Punta Loyola near Rio Gallegos in Santa Cruz Province in the south to La Quiaca in Jujuy Province in the north. The route parallels the Andes mountains. The southern part of the route, a largely unpaved road through sparsely populated territory, has become a well-known adventure tourism journey, although there are plans to pave the whole road.