“If you want to learn about a city," Greek street artist iNo recently told The New York Times, "look at its walls". Also, its shoes. Definitely, the shoes.
Turns out that -- much as his name might suggest -- iNo may be on to something. When it comes to capturing the mood and atmosphere of a city, its graffiti-sprayed walls paint a pretty accurate picture.
Here are a few of our favorite pieces of street art from around the world.