I love the photographic work of CoolbieRe, especially his interpretations of Hong Kong. He makes it look like Tron's world, perhaps because Hong Kong — with all its mighty electronic manufacturing power — is as close to Tron's world as you can get on Earth.
To quote Flynn:
The Grid. A digital frontier. I tried to picture clusters of information as they moved through the computer. What did they look like? Ships? Motorcycles? Were the circuits like freeways? I kept dreaming of a world I thought I'd never see. And then, one day. I got in.