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WATCH: 5-year-old builds wastewater treatment plant model out of Lego, puts whatever you built to shame

Wally is five years old and he built a wastewater treatment plant out of Lego.

Really, it’s quite impressive. That and his narrated tour of the colorfully snapped-together facility is one of the best things I’ve seen in a long time. Not something I’d want to step on with bare feet in the dark, though. Check this out.


Updated December 21, 2015