Sabena Most Helpful AirlineOriginal vintage travel advertising poster: Rome Paris Greece Germany London Brussels Sabena Belgian World Airlines Europe's most helpful airline. Great design featuring two blue planes flying upwards leaving a trail of colourful images of European landmarks behind them, including the Coliseum in Rome, the Eiffel Tower in Paris, the Parthenon in Greece, a castle in Germany, a Royal Guard in London and a row of buildings in Brussels with the names of