Potsdamer Platz is a minimalist hub of tall modern glass architecture in the centre of Berlin. I was first taken by the size of the billboard, only to discover on closer inspection it is a levelled building site made to look like it exists and is part of the plaza's commercial activity. From the actual building next door I estimated it was a 12 story high structure of scaffolding and printed canvas. I assume the 2 huge backlit billboards funded this rather grand illusion.