Across the street from Congress, this elegant 16th-century colonial mansion once belonged to the family considered the founders of Lima, but it became the site of a tribunal for the notorious Spanish Inquisition. The museum soberly addresses this phase of religious intolerance in Lima, where at least 32 Peruvians died and countless others were tortured during the Inquisition, which persisted until 1820. The unfortunate history is plainly evident in the catacombs, which served as prison cells; on view are several instruments of torture. The guided tour lasts about 1 hr. Be sure to take note of the intricately carved ceiling of the Tribunal room, which was home to the National Senate during republican times. Note: The museum was closed at last visit for restoration, so be sure to check the website to see if it has reopened before visiting.