1. Aug, 2017

Berlin: East Side Gallery, a good example ...

"The East Side Gallery, one of Berlin's most popular sights, is a former section of the Berlin Wall. After the Fall of the Wall, artists have turned it into the largest open-air gallery in the world with over one hundred paintings." See https://www.berlin.de/en/attractions-and-sights/3559756-3104052-east-side-gallery.en.html