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Aachen Cathedral is one of the most famous churches in Germany. It is over 1200 years old and consists of several parts, all of which look quite different. But that's not all: Charlemagne had the church built and hid a secret code inside. Siham discovers Aachen Cathedral and deciphers the secret code. ???? Leave a like if you liked the video! -------------------------------------------------------------- ▶️ More videos on important buildings: • Construction sites and buildings ???? The page with the mouse: https://www.wdrmaus.de ???? All videos with the mouse in the media library: http://www.wdr.de/k/maus_mediathek ???? The mouse APP: https://www.wdrmaus.de/extras/mausapp... ???? The mouse on Instagram: / diemaus ???? The mouse on Facebook: / diesendungmitdermaus ???? The mouse on Twitter: / diemaus -------------- The show with the mouse is a format that is primarily aimed at children. This means: Certain functions such as comments are not available for these videos. #Aachen #Dom #Oktogon