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The Underground City of Osówka

The facility of war built under the codename Riese by the Third Reich.

The facility of war, built under the codename Riese in the Owl Mountains by the Third Reich in the years of 1943-1945. For a short time they made almost 2 km of underground corridors, halls and sidewalks. You can see guardhouses, technical corridor and an enormous, 10 m high hall and many buildings on the ground. According to one hypothesis, after completing the Germans planned to deploy here researchers working on wunderwafe and a prototype of the atomic bomb. Others say that “the gold train” and lorries with gold of Wroclaw had been hidden somewhere around.

We recommend:

  • All-season restaurant.

Additional information:
Historical route – sightseeing with a guide of 1200m underground corridors, halls and excavations from 1945. Extreme route – sightseeing the underworld with a guide + crossing by landing boat and exploring the corridors of treasure hunters.


The Underground City of Osówka
ul. Świerkowa, Sierpnica, 58-340 Głuszyca
tel. +48 74 845 62 20

GPS: N 50 40 10 E 16 25 05


Open daily, opening hrs. 10.00 am – 5.00 pm.

  • the historical route: from 10.00 a.m. to 4.30 p.m., without reservation.
  • the extreme route: tuesday, thursday, saturday from 4.00 p.m. 

Tickets for the historical route:

  • normal – PLN 35,
  • reduced – PLN 29.

Ticket for the extreme route – PLN 40.

Sightseeing time:

  • 60 mins. (the historic route)
  • 70 mins. (the extreme route).