This is a marble run designed and built by Ortwin Grüttner that begins with a single marble running down a couple ramps and tubes before setting off a 2,672 marble chain reaction to destroy a wooden castle. I love stuff like this. I think it’s– “Because you have the mind of a six year old?” I was going to say five, but it means the world to me that you think I’m maturing. I want to make you proud. I also want to make a voodoo doll of you that I can poke at night to wake you up when I can’t sleep. “Why would you do that?” So I know I’m not the only one who can’t sleep. “Um, what?” Our relationship is complicated, I get it.
Keep going for the video.
Source: Chain Reaction Sends A 2,672 Marble Army To Destroy A Wooden Castle