The cap was installed by the European energy company Vattenfall Europe and marks its official status as a major sponsor and partner of the city of Berlin in the preservation and operation of the gate. The company is responsible, among other things, for the elaborate and festive night-time lighting system that illuminates the iconic gate monument.
"Partner für Berlin" (Partners for Berlin) is awarded to companies that have worked on urban projects. The logo consists of an illustration of the Brandenburg Gate.
Translation of the text on the cover: Vattenfall Europe