Ryan Graudin

While on first glance The Walled City appears to be a dystopian fiction, the book is actually based on a very real place: The Kowloon walled city in Hong Kong was once home to a Chinese military base. There was no architectural plan, which led to makeshift buildings being thrown up without a proper plan. The result was a haven of drug lords, poverty and a home for black markets and brothels.

The Walled City is based entirely on this premise.