Paris is the capital and most populous city of France, with an area of 105 square kilometres and a population of 2,206,488. Since the 17th century, Paris has been one of Europe's major centres of finance, commerce, fashion, science, music, and painting. The Paris Region had a GDP of €681 billion in 2016, accounting for 31 per cent of the GDP of France. In 2013–2014, the Paris Region had the third-highest GDP in the world and the largest regional GDP in the EU. According to the Economist Intelligence Unit Worldwide Cost of Living Survey in 2018, Paris was the second-most expensive city in the world, behind Singapore and ahead of Zurich, Hong Kong, Oslo and Geneva.
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.