Severinstraße (in) Kölsch: Vringsstroß) is the Name a 995-metre-long road in a north-south direction between Chlodwigplatz and Waidmarkt in the Cologne Old Town South runs.
If you look at the house numbers on the facades of the houses, something unusual stands out. The count begins at Chlodwigplatz and ends towards the cathedral.

Usually, the numbers start in large Cologne streets from the center of the city.
But why is that? An exact answer cannot be given, but there are indications:
‘Je vous prie de le discuter avec Monsieur le Professor Wallraf.‘
The University of Cologne has summarized the history of street renaming here:

Wallraf's new street name Ferdinand Franz Wallraf (1748-1824) – A search for traces in Cologne
Sources:
Wallraf's new street name Ferdinand Franz Wallraf (1748-1824) – A search for traces in Cologne
