This is what we can do with technology now: the Titanic, recreated in fully explorable 3D:
You can watch in full HD! The detail is absolutely stunning. However, you may get motion sickness if you watch in fullscreen mode.
“CryEngine 3” is a piece of video game software developed by a studio called Crytek, to power their game Crysis 2. The awesome thing is that the engine is flexible enough that you can do just about anything with it; hence this Titanic model and I would guess all sorts of other crazy applications. I’d like it if someone made a collection of real and imaginary locations to explore; I’m thinking of the Discovery from 2001: A Space Odyssey; the Colosseum in Rome, but, like, intact… and other things.