The ruined bunker complex in the forests of northeast Poland was once the nerve centre of Adolf Hitler's war machine.
More recently, giggling tourists play paintball and pose for photographs in Nazi uniforms at the site which critics have dubbed a "grotesque Disneyland".
But now, 68 years after German troops dynamited much of Hitler's so-called "Wolf's Lair" before fleeing the advancing Soviet Red Army, Poland has announced plans to renovate the 240ha complex and turn it into a historical and educational centre.
The project has been initiated by the Ministry of Culture and National Heritage, which has granted a new lease for the "Wolf's Lair" under the proviso that the company running the site drops its fun park image.
Hitler had the "Wolf's Lair" built as his Eastern Front headquarters in what was then East Prussia, and used it to co-ordinate the Nazi invasion of the Soviet Union. The compound was a heavily guarded complex of buildings and concrete bunkers.