Street artists have transformed this notoriously dangerous city into a tourist attraction for art lovers.
Comuna 13, a neighborhood in Medellín, Colombia, is not where most people would have gone for a walking tour 10 years ago.
In fact, travelers were actually told to avoid the area because of high murder rates and the lingering influence of powerful drug lords in the 1980s and '90s.
But today, Comuna 13 has a totally different story: Local artists have created a vivid street-art scene, and murals cover almost every wall. Now Comuna 13 is one of the most visited neighborhoods in Medellín, and it's showing the world how art can change things in a big way.