Graffiti art covers the hidden leftover segment of a back-wall of the Berlin wall, in Berlin's Pankow district on September 28, 2019. - Various associations in Berlin are keen to preserve lesser-known traces of the Berlin wall (1961-89), including segments of the back-wall, watch-towers and markers, in a bid to keep the memories of a divided Germany alive for future generations. (Photo by John MACDOUGALL / AFP)
A part of the Berlin Wall in the Pankow district. AFP

After fall of the Berlin Wall, a thriving arts scene has emerged