Located in the pre-WW2 bunker at Lake Szmaragdowe. The dungeons are open to visitors from April to September. Between October and March, the bunkers are closed because of hibernating bats.
The Szczecin Tourist Information Center "Szmaragdowe-Zdroje" is in a pre-war shelter at the Szmaragdowe Lake.
The center is open from Monday to Friday from 9:00 a.m. - 3:00 p.m. and occasionally on weekends.
Due to the legally protected wintering grounds of bats, the underground of the facility is open to visitors from April 16 to September 30 (entrance free).