The Lonsky Prison, on Stepana Bandery Street near the centre of Lviv, was used as a place of detention and interrogation by Polish, Soviet, and Nazi authorities in succession during the turbulent years of 1939–1944. The National Memorial Museum of Victims of Occupational Regimes, which opened in 2009, occupies the original building and presents the history of political repression under both Soviet and Nazi rule with considerable archival depth.
The museum is not comfortable viewing, but it is honest and well-documented. Original prison cells, interrogation rooms, and corridors are preserved, and the exhibitions make extensive use of photographs, documents, and personal testimony. It's one of the more important historical sites in western Ukraine for understanding the 20th century, and is visited by both Ukrainian school groups and international travellers interested in the region's complex history.