Few days ago I wrote here about the stumbling stones, which remind Germans about their dark moments. It was a simple and powerful use of the monotonous sidewalk's surface. I always try to look at the ground to see where I'm going. When I moved to Stockholm and started using the metro, I couldn't miss the wonderful compasses that they had painted on the metro's platforms.
Using the metro can distort our sense of space, and when you try to find your way out of a metro station, every piece of information is useful. Allowing the passengers to have more sense of direction about the outside world, with such a simple but effective solution, is extremely helpful. Using the metro’s boring platform as another information provider is a great idea.