 The museum is located in the former KGB headquarters across from the Lukiškės Square; therefore, it is informally referred to as the KGB Museum.The museum is dedicated mostly to collecting and exhibiting documents relating to the 50-year occupation of Lithuania by the Soviet Union, the anti-Soviet Lithuanian partisans, and the victims of the arrests, deportations, and executions that took place during this period.Before 2018, the museum was known as the Museum of Genocide Victims, reflecting a broadened definition of the term "genocide" used by the Genocide and Resistance Research Centre.