RUTA 40

Where: Argentina

Argentina’s Ruta 40 is one of the longest stretches of highway in the world, connecting 20 national parks with countless passes through the Andes mountain range. If you don’t have time for the entire span of more than 3000 miles, we recommend bypassing the tourist-clogged southern portion and exploring the harrowing and gorgeous upper elevations, where Ruta 40 climbs as high as 16,000 feet above sea level.