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Why is Rose Monday important in Cologne’s carnival season?

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Cologne The Hohenzollern rail and pedestrian bridge over the Rhine River, Cologne, Germany, with the city's cathedral in the background.

In Cologne, the annual pre-Lenten carnival is a significant cultural event, and Rose Monday serves as its climactic highlight.1

While the city's festivities officially begin on the 11th day of the 11th month, the celebration reaches its peak during the days immediately preceding Ash Wednesday. Rose Monday is the focal point of this period, representing the culmination of the elaborate ceremonies and rambunctious revelry that define the Rhenish carnival tradition. These celebrations are deeply rooted in history, featuring customs such as costumed parades, masked balls, and the playful subversion of daily social order.21