Paris for 31 percent of the GDP of France. 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 is a major rail, highway, and air-transport hub served by two international airports: Paris-Charles de Gaulle (the second busiest airport in Europe after London Heathrow Airport with 69.5 million passengers in 2017) and Paris-Orly. Opened in 1900, the city's subway system, the Paris Métro, serves 5.23 million passengers daily, and is the second busiest metro system in
Campo de Marte Airport Pope Benedict XVI canonized the first Brazilian-born saint, Frei Galvão, during a mass on the site. Currently no scheduled flights operate at this airport. The airport is located from downtown São Paulo in the district of Santana. Campo de Marte Airport Campo de Marte Airport is the first airport built in São Paulo, Brazil, opened in 1919. It is named after Champ de Mars, in Paris, which in turn got its name from Campus Martius, in Rome. It is operated by Infraero. Campo de Marte was the first airport built in São Paulo, opened in 1919. The airport was bombarded