File:Humboldt-Gymnasium Düsseldorf Haupttrakt mit Aula.JPG - Wikimedia Commons
File:Humboldt-Gymnasium Düsseldorf Aula von Osten.JPG - Wikimedia Commons
Duesseldorf, Germany. 18th Mar, 2020. View of the closed Humboldt-Gymnasium. Here the city of Düsseldorf presents a digital learning platform. Credit: Rolf Vennenbernd/dpa/Alamy Live News Stock Photo - Alamy