WATCH: The World’s Longest Working LEGO Railway

Imagine 2.5 miles of toy train track crammed into a single room.

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It stretches an incredible 2.5 miles, is composed of roughly 93,000 LEGO bricks, and takes about two hours for a tiny motorized train to traverse, start to finish.

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You’re looking at Danish LEGO enthusiast Henrik Ludvigsen’s pet project: a continuous, crisscrossing railway crafted from slender blue plastic rails and connected by tiny LEGO “ties.” According to Guinness World Records, which validated the track as the world’s longest, Ludvigsen and a team of 80 others (part of the “Byggepladen” LEGO enthusiast group) took just six hours to assemble the 13,124-foot, 2-inch track — the culmination of a year-and-a-half of planning.

What prompted Ludvigsen to do this now?

“The day before Christmas I was cleaning out a room in our house when I found all my old blue tracks,” he told Guinness World Records. “While my wife was asleep on the couch I went off to surf the internet and got this crazy idea that I want to build the longest Lego train track in the whole world.”

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