Over here we do landscape.
Then there are folks who do buildings.
This guy is giving away scripts to do buildings in order to form a city.
http://www.tysonibele.com/
Something like:
(http://www.tysonibele.com/Main/BuildingGenerator/buildingGen_03_01.jpg)
Oh, the link:
http://www.tysonibele.com/Main/BuildingGenerator/
Look for the latest version there.
thats a really good tool/plugin
but there was a post for this a while back
http://forums.planetside.co.uk/index.php?topic=7699.0
but thanks for posting a link for the latest version. :)
It's a good plugin, never really got the hang of it though. Always ended up with windows looking misplaced, ledges at absurd angles. Suppose I might have to try again with this. maybe it's default settings have been adjusted to something more pleasing to the eye, that way I can tweak it bit by bit to learn how it works.
There is a city builder for Blender also.
http://spreadsheets.google.com/viewform?formkey=dEZjMHF2TnRTUFJ3NEh4MV9FV190N0E6M%20Q
Then there is one other, a demo, not sure if it is commercial or not.
http://arnaud.ile.nc/sce/demo.php