A city agency is giving local kids paint and skateboards in the hopes of helping them make their neighborhoods better.
As iconic as anything above ground, these subway platforms leave riders with an added sense of the city they serve.
Photos of the city's lovely, wild graffiti scene.
Comparing the price of an iPad and more than 20 other consumer goods across a selection of the world's major cities.
A look at the best and worst designs from around the world
20 mass transit maps worthy of hanging on your wall
Most of the world's capacity for economic growth is centered in its metro areas. Which cities top the list?