Unless you grew up in a dark cave, nearly everyone has fond childhood memories of playing with LEGOs. When Japan decided that the toy needed a proper celebration for it's 50th anniversary in the country, it only seemed fitting that they tasked the next generation of children (5,000 to be exact) in six different regions for a special project: to imagine a new skyline for Japan.  

Unlike similar projects of this scope which are created by LEGO Masters (which pretty much sounds like the best job ever), the original designs were entirely of the children's creations.

And design they did. Some three months and nearly 2 million Lego pieces later, and 'Build Up Japan'was born. In the clip above, watch as children collaborate and play on the massive structure. Beats the tiny pirate sets we had as kids!