This Super Tall, Super Thin Tower Was Built Just To Test Elevators

“How do you design a new type of elevator without installing it in an existing building? It’s a chicken/egg question that engineers have long struggled with—even using abandoned mine shafts to test new technology.

Today [7/29/15], [ThyssenKrupp] said it had topped out on a 761-foot-tall concrete tower in southwest Germany—the tallest observation tower in the country—that will make that process easier.

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