The "Miniatur Wunderland" model railroad in Hamburg, Germany is the largest in the world, covering 16,146 square feet of space with more than 10,000 train cars running around its 6.8 miles of HO scale track. Now, the makers of this huge layout have created a video that gives you a jaw-dropping look at the vast scope of this intricate work of art. Its construction started in 2000, and is still underway, with a tiny airport due for completion by the end of this year. This is just the beginning - there are plans to double to layout by 2014. You have to watch the video below to get the full impact of this remarkable achievement, which has taken in excess of five hundred thousand working hours to build. There's good reason why this is Germany 's most popular attraction, already visited by more than five million tourists.