EuroAirport Basel-Mulhouse-Freiburg is the world's most unique airport, allowing travelers to land in France and enter Switzerland or Germany instantly. Located in Saint-Louis, France, it serves as a vital hub for European travel, operating under dual customs zones. Discover how this tri-national airport makes travel seamless, with practical insights on transportation, passport rules, and economic impact. Read on to learn how one airport serves three countries effortlessly!