In this months issue of GIS Professional Magazine we explore the challenges and issues behind modelling London in both its construction, use and distribution in terms of virtual city models.
The issue (number 14) is interesting as it also covers articles on the development of virtual Los Angeles, Hamburg, Zurich and Salzburg. There are many solutions to the problem of creating digital cities, central to them all though is the need to tag information geographically to the 3d buildings. For this you need a GIS system, only then can the model be of direct use above and beyond the traditional CAD usage.
You can get a copy of GIS Professional by following the link above.