Following the Rio Grande Valley through northern Argentina and all the way to Bolivia is the beautiful Quebrada de Humahuaca, a colorful, craggy gorge with walls striped in shades of pink, red, lavender and gray. The multi-hued landscape is so unique that it earned a spot on the UNESCO World Heritage list, but its natural beauty isn't the only reason to visit.
This river valley cutting through an otherwise arid landscape has likely been used as a major trade route for some 10,000 years. Remnants of various area inhabitants can be seen in the hundreds of archaeological sites dotting the valley, alongside a series of tiny, dusty pueblos with old adobe churches at their centers. Unlike some of the more developed tourist centers, like Salta and Purmamarca, these picturesque villages offer a more authentic glimpse of a typical Andean town, complete with local restaurants serving locro and llama.