Construction began back in 2000 on the Miniatur Wunderland in Hamburg, Germanyand has never really stopped. It’s now the largest model railway in the world and one of Germany’s most popular tourist attractions.

Now everyone can take a virtual ride across the wunderland and visit the seven distinct areas of the attraction: Austria, Scandinavia, the Alps, America, the Harz, Hamburg and the fictitious city of Knuffingen.

As you’ll learn from the video, it has taken more than 500,000 working hours so far to create this massive miniature world. The most recent addition is the Knuffingen Airport with its 40 airplanes that can actually taxi, take-off and land.

The self-contained world is constantly growing and evolving; it’s not expected to be completed until 2020, by which time it will grow to more than 25,000 square feet. Even now, it takes a staff of 150 to build and maintain the Miniatur Wunderland.