The García Moreno Prison, a massive stone fortress built by the 19th-century president of the same name just south of the Historic Centre, operated as a prison from 1875 until 2014. After its closure, it was converted into a museum that offers guided tours through the cells, corridors, and courtyards of what was one of the most overcrowded prisons in South America.
The tour is sobering and illuminating: the cells are tiny, the conditions obviously brutal, and the guides do not romanticise what happened here. There are exhibits on Ecuador's justice system, political imprisonment, and individual stories of notable inmates. The architecture of the building itself — medieval in feel, with a panopticon layout, thick stone walls, and barred windows — is also remarkable. Not a comfortable visit, but an honest one that most travellers who go are glad they did.