The narrowest house in the world is to be found in Amsterdam, on the Singel, no.7. Only one metre in breadth, it is barely wider than the front door. Naturally the people who live there have to be slim! However to be honest it is only the front of the house that is so narrow. Behind this facade the house broadens out to more normal dimensions.
Homes - Famous
Links: en.wikipedia.org
By: GlobalPlayer
http://en.wikipedia.org/wiki/Singel_%28Amsterdam%29
http://www.holland.com/uk/cities/amsterdam/thingstosee/architecture/narrowest_house.jsp