new idea

http://www.behance.net/gallery/Gent-Scheppende-Stad/827488

for city

http://www.bbc.co.uk/leicester/content/images/2006/04/19/cardboard_city_01_470x352.jpg

http://www.flickr.com/photos/kehsiva/5809461791/

http://www.frugalfamilyfunblog.com/2012/01/cardboard-city.html