iHoused in the Aljube, a building used as a prison for most of its history and as a political jail from 1928 to 1965, the museum is dedicated to the fight against Portugal's 1926–1974 dictatorship. Floors trace censorship, the PIDE political police, interrogation and torture, the tiny isolation cells known as "curros", the anti-colonial struggle and the 25 April 1974 revolution. Archaeological remains from the Roman and Islamic periods are on view in the basement, and the top floor offers river views.

Floor 3 covers colonialism, the liberation struggles and colonial war, the regime's victims, and the Carnation Revolution that restored freedom.

Floor 1 traces Portugal from 1890 to 1976: Salazar's "God, Homeland and Family", censorship, the clandestine press, underground life and the political courts.

Floor 2 follows a political prisoner from arrest through interrogation and torture to colonial camps, ending at the Aljube's tiny isolation cells, the "curros".

On floors -1 and 0: finds from beneath the building, Roman and Islamic in origin, and the story of the Aljube as church, women's and political prison.
Rua de Augusto Rosa 42, 1100-059 Lisboa, Portugal
Nearest station: Terreiro do Paço (Metro, Blue Line), Baixa-Chiado (Metro, Blue/Green Lines) and Sé (Tram 12/28, Bus 737)
Show on map| Mon | Closed |
| Tue | 10:00–18:00 |
| Wed | 10:00–18:00 |
| Thu | 10:00–18:00 |
| Fri | 10:00–18:00 |
| SatToday | 10:00–18:00 |
| Sun | 10:00–18:00 |
From €4
Ages 13-25 €2; 65+ €2.80; disabled visitors €2.80 with a free companion; under 12 free. Temporary exhibitions free. Lisbon residents free on Sunday and holiday mornings until 14:00; free for all on 25 April and 18 May.
Step-free entrance with a wide manual door, tactile paving, wheelchair available at the ticket office, assistance dogs welcome, lockers.
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