Preserved in time: WWII bunker hidden under Paris train station It lies deep beneath Paris's bustling Gare de l'Est railway station, its sprawling subterranean rooms and sparse furniture pristinely preserved if a little dusty: a bunker built a few years before World War II. Few of the thousands of travellers passing through the central Paris station have any inkling of the time capsule under their feet, hidden under a discreet trap door on the platform.