In this talk, Ian Lambot tells how, for over 40 years, between 1947 and 1992, the Kowloon Walled City was able to grow and prosper, as part of China but situated in Hong Kong.  It was thus a law unto itself, plus the home of every vice and virtue.  Here, on a site measuring just 220 x 110 metres, without the contribution of architects or engineers and with only minimal government intervention, the City became home to some 35,000 people, making it by far the most densely populated place on Earth.