Schiphol International Airport

AMSTERDAM, THE NETHERLANDS - APRIL 14: KLM Royal Dutch Airlines Boeing 737-7K2(WL) sits on the tarmac outside Departures area C of Schiphol International Airport on April 14, 2019 in Amsterdam, The Netherlands. Amsterdam Airport Schiphol is the main international airport of the Netherlands and is the third busiest airport in Europe in terms of passenger volume. It is the hub for KLM and its regional affiliate KLM Cityhopper as well as for Corendon Dutch Airlines, Martinair, Transavia and TUI fly Netherlands. Schiphol opened on 16 September 1916 as a military airbase and since 1949 it has become the primary airport of the Netherlands. (Photo by Horacio Villalobos - Corbis/Corbis via Getty Images)