The museum fills the building where the Soviet NKVD and KGB worked from 1940 to 1991, opposite Lukiškės Square. Upstairs, rooms of documents, photos, maps and personal belongings cover deportations to the gulags and the partisan war in the forests.
The basement holds the preserved prison: the cells, a padded isolation cell and the former execution room. The subject is heavy, so it suits teens more than younger kids.
