World Record Rube Goldberg Contraption Lights Up Xmas Tree

The municipal Xmas tree in Riga, Latvia, was switched on by a process that took 412 steps and ten minutes to complete. The video is much shorter because the part where they brewed coffee was condensed, and there may have been other shortcuts for the video.

(YouTube link)

You have to imagine how frustrating all the tests were for this, and how nervous the builders must have been to make it perform perfectly, not just for the waiting crowd outside, but in front of Guinness judges. The company Scandiweb sponsored the record-setting chain reaction that Guinness has enshrined as the World's Largest Rube Goldberg Machine.