France, officially the French Republic, is a transcontinental country spanning Western Europe and several overseas regions and territories. Its metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America and several islands in the Atlantic, Pacific and Indian Oceans. France borders Belgium, Luxembourg, and Germany to the northeast, Switzerland, Monaco and Italy to the east, Andorra and Spain to the south, as well as the Netherlands, Suriname, and Brazil in the Americas. Its eighteen integral regions (five of which are overseas) span a combined area of 643,801 km2 (248,573 sq mi) and over 67 million people (as of May 2021). France is a unitary semi-presidential republic with its capital in Paris, the country’s largest city and main cultural and commercial centre; other major urban areas include Lyon, Marseille, Toulouse, Bordeaux, Lille, and Nice. Including its overseas territories, France has twelve time zones, the most of any country.