http://www.miniatur-wunderland.com/exhibit/video/4-minutes-wunderland/
WOW!!!
I kept expecting Lex Luthor to show up, it reminds me of the layout built for ‘Superman Returns’
Now I know why most vendors run out of Preiser figures (HO) so quickly.
It is really BIG, but keep looking at it and then ask yourself would you like to live in any places like the ones predicted? Thankfully Europe isn’t quite as crowded and hectic as that!
I worked on a similarly large project in Germany back in 1987, I quit after three weeks! The supposed/professed vision and what was getting built sure didn’t match. Even way back then - holy crap it will be 25 years come January! - I wasn’t in the mood for that.
OTOH Wunderland makes good use of the vertical. :lol: :lol: 
They had an article in Model Railroader on that layout probably about a year ago. Is pretty interesting. The vehicles running on the streets without any visable track is probably the most interesting.