Street art is ephemeral by nature, but the Urban Nation Museum seeks to provide a permanent home for the spirit that inspires it. Located in Berlin, the graffiti capital of Germany, the museum boasts a rotating collection of exhibits, unique architecture and on-site living quarters for artists-in-residence. Its ONE WALL initiative invites artists from all over the world to come to Berlin and share their vision via huge murals all over the city--both East and West. A recent example of ONE WALL is a work executed by the Swiss street artists BustArt and Sket185 entitled ‘Departure’, addressing the closing of the Tegel Airport. Painted in 2020, the mural spans 40 by 16 meters. This spectacular image reflects on the past with local air traffic, and the future without accessibility to an airport.