Turns out that #Cologne's coat of arms has a quite complex history. If you want to learn what a #martyr and #bees have to do with it, I recently summarized some information about it on my blog: https://www.fabriziomusacchio.com/blog/weekend_stories_told/2024-02-10-cologne_coat_of_arms/
One of many St. Ursula reliquaries in the Church of St. Ursula (#Cologne).