Odyssey by Causas Externas Studio, Barcelona. Of Odysseus's journey, the studio says: "It's impossible to choose an object to represent an adventure in which what's important is the experience itself, and not the places visited. For this reason, music — an intangible art — performs the task of evoking the memory of past experiences. The souvenir is a plinth, but there is no memento on it, only a loudspeaker playing Carlos Gardel’s song 'Volver.'" (Click here to read the lyrics.)