On March 15, 2013, the platforms for the Toyoko Line at Shibuya Station moved from the second floor to the fifth floor basement, ending the line's 85-year history of above-ground operations. When the last train rolled into the station, 1,200 workers were standing by waiting, in a massive coordinated effort, to relocate the entire span of train tracks before the first train would roll in at 5 a.m. They had less than four hours to complete the task.

The video above is astonishing not only for the magnificent feat of engineering, but also for the collective chaos. Read more about it at Spoon & Tamago below!