Beautiful little video about a lovely big idea. Anyone fancy a London version?

A city in a city in a country in a country!

The Kowloon Walled City in Hong Kong was once the most densely populated place on earth, a teeming hive of interlinking high-rises that few dared to enter but 33,000 people called home.

"Modern cities are hives and tangles and piles."

This is a weird, unique book. It’s non-fiction but written like a Sherlock Holmes novel. Set around the 1893 Chicago World's Fair, it tells the stories of two men: Daniel H. Burnham, the architect responsible for the fair's construction, and H.H. Holmes, a serial killer masquerading as a charming doctor.