PODZIEMNE MIASTO OSÓWKA. Głuszyca, W. dolnośląskie, Poland. Promotional ticket

PODZIEMNE MIASTO OSÓWKA
[Osówka Underground City]
Głuszyca

Promotional ticket from Turystyczna trzynastka.

The work of this underground complex was commenced in the middle of 1943. It led to the creation of a huge system of concrete corridors, fortifications and halls. The purpose of this work was kept secret. Some claim it was meant to be Adolf Hitler’s secret headquarters. Others say these halls were built for underground armament factories designated to produce secret weapon.

Thanks to Krystyna B. (https://pocztowkowezbiory.blogspot.com/).