Blick von Deutz auf die Rheinfront mit Groß St. Martin (Köln) und dem Kölner Dom |

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632 Years

Exactly, that's the right answer. It took 632 years and two months to build Cologne Cathedral. Even longer than the new airport being built in Berlin.

Finally, we'd like to present some cutting-edge architecture from Germany. The Elbphilharmonie only just opened in 2017 and may be one of the world's most beautiful concert halls. It boasts some impressive architecture, both inside and out.

Which of the following statements do you think is not true?

The Elbphilharmonie has 1,100 different window panes The Elbphilharmonie has an arched escalator The Elbphilharmonie boasts the world's largest concert hall