I love the photographic work of CoolbieRe, especially his interpretation 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.