Very cute - back in the olden days, I build something not entirely dissimilar https://web.archive.org/web/20020611095429/http://www.cs.man.ac.uk/~hancockd/City

Very cute - back in the olden days, I build something not entirely dissimilar https://web.archive.org/web/20020611095429/http://www.cs.man.ac.uk/~hancockd/CityZen/index.html https://web.archive.org/web/20020611095429/http://www.cs.man... 20k line segments, 3,350 places, plus the viewer, and a quiz - all yours for 162Kbytes.