France (pronounced /fræns/ or /frɑns/, French: [fʁɑ̃s]), officially the French Republic (French: République française, pronounced [ʁepyˈblik fʁɑ̃ˈsɛz]), is a country whose metropolitan territory is located in Western Europe and that also comprises various overseas islands and territories located in other continents. Metropolitan France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. French people often refer to Metropolitan France as L’Hexagone (The “Hexagon”) because of the geometric shape of its territory. France is a unitary semi-presidential republic. Its main ideals are expressed in the Declaration of the Rights of Man and of the Citizen.