France is a country with territory in western Europe and several overseas regions and territories. It is a unitary semi-presidential republic with the capital in Paris, the country's largest city and main cultural and commercial centre. Other major urban centres include Marseille, Lyon, Lille, Nice, Toulouse and Bordeaux. France has long been a global centre of art, science, and philosophy. It hosts Europe's fourth-largest number of cultural UNESCO World Heritage Sites and receives around 83 million foreign tourists annually, the most of any country in the world.