nce in their lifetime.
An other major destination are the Châteaux of the Loire Valley, this World Heritage Site is noteworthy for the quality of its architectural heritage, in its historic towns such as Amboise, Angers, Blois, Chinon, Nantes, Orléans, Saumur, and Tours, but in particular for its castles (châteaux), such as the Châteaux d'Amboise, de Chambord, d'Ussé, de Villandry and Chenonceau, which illustrate to an exceptional degree the ideals of the French Renaissance.
The most popular tourist sites include: (according to a 2003 ranking visitors per year): Eiffel Tower (6.2 million), Louvre Museum (5.7 million), Palace of Versailles (2.8 million), Musée d'Orsay (2.1 million), Arc de Triomphe (1.2 million), Centre Pompidou (1.2 million), Mont Saint-Michel (1 million), Château de Chambord (711,000), Sainte-Chapelle (683,000), Château du Haut-Kœnigsbourg (549,000), Puy de Dôme (500,000), Musée Picasso (441,000), Carcassonne (362,000).
Transport
The railway network of France, which as of 2008 stretches 29,473 kilometres (18,314 mi) is the second most extensive in Western Europe after the German one. It is operated by the SNCF, and high-speed trains include the Thalys, the Eurostar and TGV, which travels at 320 km/h (199 mph) in commercial use. The Eurostar, along with the Eurotunnel Shuttle, connects with the United Kingdom through the Channel Tunnel. Rail connections exist to all other neighbouring countries in Europe, except Andorra. Intra-urban connections are also well developed with both underground services and tramway services complementing bus services.
There are approximately 1,027,183 kilometres (638,262 mi) of serviceable roadway in France, ranking it the most extensive network of the European continent. The Paris region is enveloped with the most dense network of roads and highways that connect it with virtually all parts of the country. French roads also handle substantial international traffic,
