Welcome to Paris, the City of Lights! With its many iconic landmarks, cultural centers and Old Europe architecture, Paris draws more visitors than any other city in the world. Along with its population of over 12 million people, Paris requires a vast and efficient transportation network capable of serving one of Europe’s largest urban environments. The Seine River cuts through Paris, offering opportunities for waterbus routes while presenting a challenge to those looking to cross its banks. Paris’ many narrow streets and unique topography will put your urban-planning skills to test.