Two examples come to mind:
fascinating, but you wouldn’t want to emulate it: https://en.wikipedia.org/wiki/Kowloon_Walled_City
“Tokyo may have found the solution to soaring housing costs”—this one we probably should absolutely study closely: https://www.vox.com/2016/8/8/12390048/san-francisco-housing-costs-tokyo
Two examples come to mind:
fascinating, but you wouldn’t want to emulate it: https://en.wikipedia.org/wiki/Kowloon_Walled_City
“Tokyo may have found the solution to soaring housing costs”—this one we probably should absolutely study closely: https://www.vox.com/2016/8/8/12390048/san-francisco-housing-costs-tokyo