In the Severinstrasse the visitor finds bronze plates embedded in the sidewalk. Originally, they were connected to a smartphone app via Bluetooth and offered an interactive experience of the history of the Severinviertel.

Since the Bluetooth transmitters were battery-powered, the operation was not sustainable possible.

This Bluetooth connection is currently replaced by geo-coordinates. The contents of the app can be found here on this website.

Bronze plate embedded in the street pavement with a plan of Severinstraße.
© Prof. Dr. Thorsten Fröhlich · Image source · Image credit