A World Heritage Site
Reasons to visit: It's a UNESCO World Heritage Site as one of the best preserved medieval cities. The Cathedral of Notre-Dame is one of the highest in the world; the Barrio de la Petite France, with it's houses of wooden beams, channels and bridges and dams is fantastic. It is the site of the main European institutions, they say it's the Christmas Capital where you should visit the Christmas decoration in the weeks leading up to Christmas. The flowers that decorate the facades in summer, are another reason to come to this beautiful French city at different times of the year.