Why is it called cologne?

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Tags

1. #least
2. #therefore
3. #probably
4. #named
5. #lhens
6. #produced
7. #century
8. #cologne
9. #still
10. #location
11. #since
12. #wilhelm
13. #fragrances
14. #world
15. #oldest
16. #after
17. #developed
18. #glockengasse
19. #original