The Walled City of Kowloon.... The most densly populated space on Earth.
1,255,000 inhabitants per square kilometer in 1987. There were a total of 3,250,000 people living within the walls of the "square" below.
Demolished in 1993.
A scientist went to study the space and could not keep track of where he was. He was continuously lost. They had to get guides to lead them through the buildings.
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