Some random locations off the top of my head in addition to those you suggested.
1) Train or bus stations
2) Shopping mall (not the strip mall kind, but a more full mall)
3) Brick buildings with metal doors or glass windows
4) All glass storefront or residence
5) Modern-looking sculptures (in a park, for example)
I don't recommend photoshopping lights or a city background, unless the Photoshopper is really good at compositing, because you want the "fake" city background or "extra" lights to blend in with you and your surroundings. Lighting is especially tricky, because you have to take into account how the extra street lamps shine on the surrounding objects.
2012 Convention Schedule
Steampunk Worlds Fair | Otakon
Last edited by Eriol : 10-02-2011 at 10:32 PM.