The hyper-efficient paternoster elevator never stops moving -- and it's terrifying

The paternoster elevator — an open-doored lift that’s on a loop and never stops moving — was invented in the late 1800s, though its construction was halted in the mid-1970s due to safety concerns. However, there are about 250 of them left, most of them in Germany. They might be efficient, but they look terrifying.

Story by Jacob Shamsian and editing by Kristen Griffin.

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