lol Lisbon is crowded. Lisbon: 6,452/km2 Barcelona: 16,000/km2 NYC: 25,000+/km2 (depends on the source) Lower East Side NYC: 33,600/km2 - due to zoning regs

lol Lisbon is crowded. Lisbon: 6,452/km2 Barcelona: 16,000/km2 NYC: 25,000+/km2 (depends on the source) Lower East Side NYC: 33,600/km2 - due to zoning regs, there are very few buildings over 9 stories... but every building is 9 stories! Lower East Side NYC 1910: 144,000+/km2 - visit https://www.tenement.org/ https://www.tenement.org/ to learn more. Kowloon Walled City, 1970s: ~2M/km2 !!! - inspiring 1000s of dystopian Sci Fi stories from Akira to Blade Runner. https://www.google.com/search?q=Kowloon+Walled+City https://www.google.com/search?q=Kowloon+Walled+City http://demographia.com/db-nyc-sector1800.htm http://demographia.com/db-nyc-sector1800.htm