Paris hosts the annual French Open Grand Slam tennis tournament on the red clay of Roland Garros. The 80,000-seat Stade de France, built for the 1998 FIFA World Cup, is located just north of Paris in the neighbouring commune of Saint-Denis. The football club Paris Saint-Germain and the rugby union club Stade Français are based in Paris. Museums re-opened in 2021, with limitations on the number of visitors at a time and a requirement that visitors wear masks. The number of visitors from the United States increased by 237 percent over 2020. Tourism recovered in the Paris region in 2021, increasing to 22.6 million visitors, thirty percent more than in 2020, but still well below 2019 levels. Other international organisations were founded in Paris such as the CIMAC in 1951 (International Council on Combustion Engines | Conseil International des Machines à Combustion), or the modern Olympic Games in 1894 which was then moved to Lausanne, Switzerland. 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. Other popular tourist sites include the Gothic royal chapel of Sainte-Chapelle, also on the Île de la Cité the Eiffel Tower, constructed for the Paris Universal Exposition of 1889 the Grand Palais and Petit Palais, built for the Paris Universal Exposition of 1900 the Arc de Triomphe on the Champs-Élysées, and the hill of Montmartre with its artistic history and its Basilica of Sacré-Coeur. The historical district along the Seine in the city centre has been classified as a UNESCO World Heritage Site since 1991 popular landmarks there include the Cathedral of Notre Dame de Paris on the Île de la Cité, now closed for renovation after the 15 April 2019 fire. The Musée Rodin and Musée Picasso exhibit the works of two noted Parisians.

The Pompidou Centre Musée National d'Art Moderne has the largest collection of modern and contemporary art in Europe. The Musée d'Orsay, Musée Marmottan Monet and Musée de l'Orangerie are noted for their collections of French Impressionist art.

Paris is especially known for its museums and architectural landmarks: the Louvre received 2.8 million visitors in 2021, despite the long museum closings caused by the COVID-19 virus. Gare du Nord is the 24th-busiest railway station in the world and the busiest located outside Japan, with 262 million passengers in 2015. Opened in 1900, the city's subway system, the Paris Métro, serves 5.23 million passengers daily it is the second-busiest metro system in Europe after the Moscow Metro. Paris is a major railway, highway, and air-transport hub served by two international airports: Paris–Charles de Gaulle (the second-busiest airport in Europe) and Paris–Orly. 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. The Paris Region had a GDP of €739 billion ($743 billion) in 2019, which is the highest of Europe. The City of Paris is the centre and seat of government of the region and province of Île-de-France, or Paris Region, with an estimated population of 12 262 544 in 2019, or about 19% of the population of France. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, fashion, gastronomy, science, and arts, and has sometimes been referred to as the capital of the world. Paris ( French pronunciation: ( listen)) 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. 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km 2 (0.386 sq mi or 247 acres) and river estuaries.

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