Here's some details about the exhibit, expounding its sheer size and intricacy-
It took 500,000 working hours to build, going from Norway, Denmark, and Sweden to North America, through Germany, Austria, and Switzerland—complete with the Grand Canyon, 20-foot tall Swiss mountains, and:
• 800 trains.
• Over 10,000 train cars in total, running several hundred kilometers every day.
• One train is 47.5 feet long.
• Over 170 computer controlled cars.
• More than 200,000 people (there's all kinds of things here, even a crime scene).
• Controlled by 40 computers.
• 200 cameras control the premises.
• Day and night lighting simulator.
• 300,000 computer-controlled LEDs
Apparently the Scandinavian part also has a 4 ft. long ship floating in a "fjord".