This archive has conserved and disseminated Barcelona’s photographic heritage since 1931. It is located on the second floor of the old convent of Sant Agustí, where it has an exhibition room in which selections of photographs from its holdings are regularly displayed. It keeps over three million photographs of the city from 1844 to the present, in formats ranging from daguerreotypes to digital images. These pictures have been obtained from professional and amateur photographers, publishers, institutions, citizens and the City Council itself. Their subject matter is primarily the city of Barcelona, with images of important events like the 1888 Universal Exposition, the 1929 International Exposition and the 1992 Summer Olympics.