Britain has set up base inside a 19th-century mansion in the leafy grounds of Parque Lage at the foot of Christ the Redeemer. The park has a long-running history with Great Britain, with English landscape architect John Thyndale originally planting the gardens back in 1840. For the British House, event specialist Innovision has eschewed British design clichés for a space that celebrates contemporary art and furniture design.
The host nation of the 2020 Olympics has set up base inside the Cidade das Artes, a 2013 concrete arts complex designed by French architect Christian de Portzamparc. Its national house offers a dose of Japanese culture -- from traditional tea ceremonies to folk entertainment -- as well as a preview of things to come in four years' time.
Portugal's base is more of a houseboat than a house -- specifically the Sagres, a Portuguese naval ship built in 1937. It set off from Lisbon back in June and will be moored at the quays of the Ilha das Cobras in Rio for the duration of the Olympics.
Brazil's Casa Brasil is set on Pier Mauá, part of Rio's redeveloped Olympic Boulevard in a former industrial port. The national house takes over two warehouses, leading visitors on a virtual journey through Brazil's geography, history and culture.