 In 1973, despite having been closed for over 11 years, the station was renamed "Stadion der Weltjugend" to reflect the change in name of the stadium.This change was visible only to East German guards patrolling the platform, and West Berliners passing through the closed station, as ghost stations were not printed on East German city maps.It was secured with utmost care; the station entrances were walled and equipped with observation points, and a locked access door.