Secret city design tricks manipulate your behaviour

http://www.bbc.com/future/story/20131202-dirty-tricks-of-city-design
Excerpt:

“Hidden in our streets and buildings are “unpleasant designs” that force us to make certain choices, discovers Frank Swain. Once you know what they are, it will transform how you see your city. When Selena Savic walks down a city street, she sees it differently to most people.”