I’ve got a secret to tell you. Come close, come closer. Come even closer. Basel (or EuroAirport Basel-Mulhouse-Freiburg to give its full name) airport isn’t in Switzerland. In fact it’s in Saint Louis, France, a town in the Alsace region – and a 20-minute bus ride takes visitors over the international border. Disclaimer: My trip was supported by the Alsace tourism board (thank you!) but all random art theories are very much all my own!