Fort Dimanche is Haiti's most notorious political prison, used primarily under François "Papa Doc" Duvalier and his son Jean-Claude "Baby Doc" Duvalier between 1957 and 1986. The fort — originally a colonial military installation near the La Saline neighbourhood — became the principal site where political opponents, suspected dissidents, and ordinary people accused of disloyalty were taken, tortured, and killed.
The fort held some of Haiti's most prominent intellectuals, journalists, and politicians during the Duvalier years. Thousands died there. After the fall of the Duvalier regime in 1986, the fort was abandoned. It is now a memorial site and a potent symbol of Haiti's long history of state violence. Haitian human rights groups have campaigned for its official recognition as a site of historical memory. Access is difficult and requires local knowledge; it is not a tourist attraction in any conventional sense, but it is an important and sobering landmark in the city's history.