World map showing the location of Europe.

A satellite composite image of Europe Alb. Andorra Austria Belarus Belgium Bosnia Bulgaria Croatia Cyprus Czech Rep. Denmark Estonia Finland France (Fr.) Germany Greece Hungary Iceland Rep. of Ireland Italy (It.) (It.) Latvia Lich. Lithuania Lux. Mac. Malta Moldova Monaco Mont. Neth. Norway Poland Portugal Romania Russia (Rus.) S. Mar. Serbia Slovakia Slo. Spain Sweden Switz. Turkey Ukraine United Kingdom Vatican Adriatic Sea Arctic Ocean Baltic Sea Barents Sea Bay of Biscay Black Sea Celtic Sea Denmark Strait Greenland Sea Gulf of Cadiz Ligurian Sea Mediterranean Sea North Atlantic Ocean North Sea Norwegian Sea Strait of Gibraltar Europe is one of the seven traditional continents of the Earth. Physically and geologically, Europe is the westernmost peninsula of Eurasia, west of Asia. Europe is bounded to the north by the Arctic Ocean, to the west by the Atlantic Ocean, to the south by the Mediterranean Sea, to the southeast by the Caucasus Mountains and the Black Sea and the waterways connecting the Black Sea to the Mediterranean. To the east, Europe is generally divided from Asia by the water divide of the Ural Mountains, the Ural River, and by the Caspian Sea. Europe is the world's second-smallest continent in terms of area, covering about 10,180,000 square kilometres (3,930,000 sq mi) or 2.0% of the Earth's surface. The only continent smaller than Europe is Australia. It is the third most populous continent (after Asia and Africa) with a population of 710,000,000 or about 11% of the world's population. Europe's overall population density is one of the highest in the world. However, the term continent can refer to a cultural and political distinction or a physiographic one, leading to various perspectives about Europe's precise borders, area and population. Of Europe's 48 countries, Russia is its largest by area and population, while the Vatican is the smallest. Europe is the birthplace of the European Union, a union founded in 1993 (but the roots of which date back to the 1950s) to enhance political, economic, and social co-operation and integration; currently, it comprises twenty-seven member states.