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Köln

Agrippina's Roman colony on the Rhine; its cathedral took 632 years and once was the tallest building on earth.

Dated events and their evidence

• 50 CE mainstream
  founded as Colonia Claudia Ara Agrippinensium source
• 1248 CE mainstream
  cathedral begun source
• 1288 CE mainstream
  free city after the Battle of Worringen source
• 1880 CE mainstream
  cathedral finished — briefly the world's tallest building source
• 1942 CE mainstream
  Operation Millennium destroys 61% of the built-up city source
• 1996 CE mainstream
  cathedral becomes UNESCO World Heritage source

Where

50.9364° N, 6.9528° E

Sources

• https://en.wikipedia.org/wiki/Cologne
• https://en.wikipedia.org/wiki/Cologne_Cathedral
• https://en.wikipedia.org/wiki/Battle_of_Worringen
• https://en.wikipedia.org/wiki/Bombing_of_Cologne_in_World_War_II

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