On Saturday afternoon, consider visiting one of the city's many museums:
Museu do Índio, or the Brazilian Indian Museum, in Botafogo, has exhibits about Brazil's indigenous groups and a shop - Artíndia - which is one of the best places in Brazil to buy genuine indigenous art.
Paço Imperial, one of Rio de Janeiro's oldest buildings, takes visitors back to the time when Rio was the seat of the Portuguese empire.
Museu Nacional de Belas Artes (www.mnba.gov.br) offers a summary of Brazil's art history, with works by the country's leading artists.
Likewise, the National Historical Museum (Praça Marechal Âncora, in Central Rio), is a must for the history buff with an all-around tour of Brazil's past and the largest numismatic collection in Latin America.
For amazing private art collections made public, go to Museu da Chácara do Céu, in Santa Teresa, with Brazilian and international art and a 360-degree view of Rio and the Guanabara Bay, or schedule a visit to the Eva Klabin Foundation, by scenic Lagoa Rodrigo de Freitas.
Rio de Janeiro malls stay open on Sundays, but shops on the streets don't. If you want to browse Rio's wonderful stores, even if just for window shopping, one of the first places you could go to is Rua Visconde de Pirajá, especially the blocks around the corner of Garcia d’Ávila.
Cloudy? Head to Shopping Leblon (www.shoppingleblon.com.br) or Rio Sul (www.riosul.com.br), a quick taxi ride away from the Copacabana/Leme border.