Lugar de la Memoria
From 1980 to 2000, two terrorist groups waged a fierce war against the Peruvian state: Sendero Luminoso and the Movimiento Revolucionario Túpac Amaru. Their assaults and the brutal reaction of the Peruvian military left some 70,000 citizens dead—mostly poor campesinos (country folk) from the sierra. This somber museum commemorates that dark period, with historical exhibits and video testimony from many of the victims. The displays are all in Spanish, but even if you don't know the language, this place makes an impression.
You can view an even more powerful exhibit on Sendero Luminoso on the sixth floor of the Ministerio de la Cultura, in the San Borja district.