Eavesdropping, infiltration, compromise or political assassination, the French capital has been the scene of actions carried out by Russian, Chinese, American, Israeli or Turkish spies since the end of the 19th century. With two airports, seven major train stations, numerous cemeteries and churches, a record number of metro stations, 157 embassies and the headquarters of UNESCO at 7 Place de Fontenoy, Paris is an ideal playground for secret agents from around the world. Let's take a look at the major cases, the methods and the lairs of the spies.