Paris is the capital and most populous city in France, with an administrative-limits area of 105 square kilometres and an official population of 2,206,488. The city is a commune and department, and the heart of the 12,012-square-kilometre Île-de-France region, whose 2016 population of 12,142,802 represented roughly 18 percent of the population of France. Since the 17th century, Paris has been one of Europe's major centres of finance, commerce, fashion, science, and the arts. The Paris Region had a GDP of €649.6 billion in 2014, accounting for 30.4 percent of the GDP of France. According to official estimates, in 2013-14 the Paris Region had the third-highest GDP in the world and the largest regional GDP in the EU.
The City of Paris's administrative limits form an East-West oval centred on the island at its historical heart, the Île de la Cité; this island is near the top of an arc of the river Seine that divides the city into southern Rive Gauche and northern Rive Droite regions.