Just prior to his own death, Pedro II donated most of his possessions to the Brazilian government, which were later divided between the Brazilian National Archives, the Imperial Museum of Brazil, the National Library of Brazil and the Brazilian Historic and Geographic Institute. Pedro II imposed only one condition: that the gift was to be named in honor of his late wife, and so it is known as the "Teresa Cristina Maria Collection". The collection is registered by UNESCO as part of the heritage of humanity in its Memory of the World Programme. Finally, Teresa Cristina is remembered in the names of several Brazilian cities, including Teresópolis (in Rio de Janeiro), Teresina (capital of Piauí), Cristina (in Minas Gerais) and Imperatriz (in Maranhão).