This looks like a lot of fun - City Creator. It’s one of those build-a-scene toys, like StorTroopers or the generate-a-Lego-version-of-yourself sites. It’s very detailed, though, and you can build an entire city rather than just one person. (I admit that I’ve yet to play with it myself - I tried, but you really need a web connection faster than 28.8kbps.)