The Eiffel Tower (Tour Eiffel) in Paris is France's most iconic and visited landmark—~7 million ticketed visitors annually, countless more viewing from the Champ de Mars, Seine bridges, and Montparnasse.
Built for the 1889 Exposition Universelle, the 324 m wrought-iron lattice tower was the world's tallest structure until 1930. Three levels offer restaurants (58 Tour Eiffel, Le Jules Verne), exhibits, glass-floor views, and the summit panorama (70 km visibility).
Beyond the Tower, France's UNESCO-listed depth includes: Mont Saint-Michel, Versailles, Loire Valley châteaux, Carcassonne, Pont du Gard, Lyon, Bordeaux, Avignon, Albi, and prehistoric caves (Lascaux IV, Chauvet 2). But the Eiffel Tower remains the singular global shorthand for "France."