Museu da Imagem e do Som do Rio de Janeiro, Museum in Lapa, Rio de Janeiro, Brazil

The Museu da Imagem e do Som do Rio de Janeiro is a state museum of carioca culture whose collections are split between a unit at Praça XV, in a 1922 Centenary Exhibition pavilion, and an administrative seat in Lapa. Its planned new headquarters in Copacabana, designed by Diller Scofidio + Renfro on the site of the old Help nightclub, is not yet open.

The museum opened on 3 September 1965, during Rio's fourth-centenary celebrations, and pioneered the audiovisual museum model later copied in other Brazilian cities. Its Praça XV building, designed by Raphael Rebecchi in Louis XVI style for the 1922 Independence Centenary Exhibition, was a temporary pavilion with timber-framed walls and mortar over deployée mesh; it housed the Instituto Médico Legal and the foreigners' registry before the museum, was restored in 1990, and was listed by INEPAC in 1988 and 1992. A Lapa building joined in 1990. The Copacabana headquarters, won by Diller Scofidio + Renfro in a 2009 competition, began construction in 2011 and remains unopened.

The name "Museu da Imagem e do Som" simply means "Museum of Image and Sound," and that is exactly what visitors encounter inside. The collections bring together film footage, photographs, and audio recordings that document everyday life in Rio across many decades.

The museum's two working units are in the city centre: the Praça XV building, a protected 1922 exhibition pavilion, and the Lapa building, which holds administrative sectors and part of the collection open to researchers. The Copacabana headquarters on the old Help nightclub site is still under construction, so plan visits around the Praça XV and Lapa addresses.

The new Copacabana headquarters, designed by the New York office Diller Scofidio + Renfro after an international competition in 2009, is planned for the site of the old Help nightclub. Construction began in 2011, but the building has not opened; inauguration dates were moved from 2014 to 2016 and then to 2018. Its facade takes the Copacabana sidewalk pattern and folds it into a vertical boulevard.