On the occasion of the 25th anniversary of the fall of the Berlin Wall and the launch of the new campaign clip ”Wall and Chain,” Airbnb invited 800 guests to a revolutionary party in the Ewerk in Berlin, close to the former site of the Wall. The guests were separated into two groups at accreditation via a random generator – in "Wessis" and "Ossis." The groups were split up by the “Wall” at midnight on the anniversary of the fall of the Wall, and reunited through a group effort to tear down the wall. Then the reunification party began.