Museo de la Inquisición y del Congreso, Historical museum in Lima District, Peru

The Museo de la Inquisición y del Congreso occupies the former Tribunal del Santo Oficio on jirón Junín, facing Plaza Bolívar. Its Sala de Audiencias keeps a mudéjar coffered ceiling and the 'puerta del secreto', a small hole through which accusers testified anonymously. Visitors also see the detainees' cells and the instruments used to obtain confessions.

The Inquisition tribunal was established in Lima on 29 January 1570 under viceroy Francisco Álvarez de Toledo, following instructions from the Crown of Castile, and occupied this building on Plaza Bolívar. After independence the former tribunal hall hosted Peru's first Constituent Congress, and the building served as the seat of the National Senate until 1939, when the Senate moved to the Palacio Legislativo. The Public Library of the Chamber of Deputies operated here from 1943, and the Congress museum opened on 26 July 1968.

The building displays original furnishings and architectural details from different periods, showing how the space was used under the Inquisition and later during Congress sessions. These elements help visitors understand the daily reality of the institutions that occupied this place.

The museum stands on jirón Junín beside Plaza Bolívar, in the historic centre of Lima. Visits have been suspended since 2016 because of restoration works, and on 29 December 2022 a contract was signed for a remodelling project worth more than 13 million soles, so check before travelling that it has reopened.

The museum keeps the cells where detainees waited for trial and the instruments used to obtain confessions. Its most cited room is the Sala de Audiencias, with a Mudejar coffered ceiling and the so-called 'puerta del secreto', a small opening through which accusers testified without revealing their identity.