Paris is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 34th most densely populated city in the world in 2020. It has been one of the world's major centres of finance, diplomacy, commerce, fashion, gastronomy, science, arts, and has sometimes been referred to as the capital of the world or "the City of Light. Paris, France's capital. Beyond such landmarks as the Eiffel Tower and the 12th-century, Gothic Notre-Dame cathedral, the city is known for its cafe culture and designer boutiques along the Rue du Faubourg Saint-Honoré.

The Paris Region had a GDP of €739 billion ($743 billion) in 2019, which is the highest in Europe. According to the Economist Intelligence Unit Worldwide Cost of Living Survey, in 2021, Paris was the city with the second-highest cost of living in the world, tied with Singapore, and after Tel Aviv. Paris hosts several United Nations organisations: the UNESCO, the Young Engineers / Future Leaders, the World Federation of Engineering Organizations, and other international organisations such as the OECD, the OECD Development Centre, the International Bureau of Weights and Measures, the International Energy Agency, the International Federation for Human Rights, the International Organisation of La Francophonie; along with European bodies such as the European Space Agency, the European Banking Authority or the European Securities and Markets Authority.