This underground parking structure in Japan is able to hold 800 bicycles in a very small space. However, that is only part of what makes it incredible. The cyclist will put their bike in the entrance of the parking garage. A card will then be given to the cyclist. When the cyclist returns, he just has to stick the card in a slot and the bike comes right back out again, in an incredible 23 seconds.

This garage is 100% automated and uses robots to park the bikes and then to return them to their owners. The robots are based off of industrial robots.

Getting all 800 bikes into the structure took a lot of research as well. It was determined that a zig-zag pattern of parking the bikes was ultimately the best method, though even that took a lot of refinement so that no bike would hit another bike on its way out.

The construction of the garage is also innovative. Using their method they are able to build such a structure quickly and fairly cheaply.

Be sure to watch the video below – this really is an incredible feat of engineering.