Or the Eixample neighborhood in Barcelona. Population density 92000/sq mi (36,000/km²). A photo: http://lh5.ggpht.com/-zHv1hczQcD4/UdgqTs1G3cI/AAAAAAAAqCI/leM5

Or the Eixample neighborhood in Barcelona. Population density 92000/sq mi (36,000/km²). A photo: http://lh5.ggpht.com/-zHv1hczQcD4/UdgqTs1G3cI/AAAAAAAAqCI/leM5NgaGsx4/eixample-barcelona7%25255B6%25255D.jpg?imgmax=800 http://lh5.ggpht.com/-zHv1hczQcD4/UdgqTs1G3cI/AAAAAAAAqCI/le... https://en.wikipedia.org/wiki/Eixample https://en.wikipedia.org/wiki/Eixample