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
Frejus Airport Frejus Airport Frejus Airport . is a former airport in France, located in FREJUS (Departement du Var, Provence-Alpes-Côte d'Azur); 430 miles southeast of Paris. The airport today is closed, but appears to be well-maintained. Now it is used as a sport complex and contains facilities for, among others football, rugby, running, and basketball. Frejus Airport was built before World War I as a grass naval airfield. The airfield opened on 28 March 1912 with the first official test flight of a Canard Voisin. It continued to be used for test flights. For the tests a new unit was established called