The movie below provides a quick recap on the quality and realtime lighting:
Of interest for urban visualisation is the level editor which is detailed in the next movie embedded below. If you get through the first minute or so it provides a good insight into the capabilities of the engine:
Although the movie is focused on game editing it is equally applicable to architectural visualisation, especially with the realtime shadows and lighting.
If your interested in using game engines for visualisation take a look at our two part Oblivion Tutorial. Oblivion is still the easiest engine to import into, the following movie was the result of less than one hours work:
For those interested we are currently building the same model in Second Life - see our previous posts for the location, feel free to pop along to check on progress.