The former Hospital de la Santa Creu i Sant Pau (Catalan pronunciation: [uspiˈtal də lə ˈsantə ˈkɾɛw i ˈsam ˈpaw], English: Hospital of the Holy Cross and Saint Paul) in the neighborhood of El Guinardó, Barcelona, Catalonia, Spain, is a complex built between 1901 and 1930. It is one of the most prominent works of the Catalan modernisme architect Lluís Domènech i Montaner. The complex was listed as a Conjunto Histórico in 1978. Together with Palau de la Música Catalana, it is declared a UNESCO World Heritage Site in 1998.Being composed of 12 pavilions connected through long underground galleries within its large green space, Sant Pau is the largest complex built in Art Nouveau style. It was a fully functioning hospital until June 2009, when the new hospital opened next to it, before undergoing restoration for use as a museum and cultural center, which opened in 2014. Besides being an important historical and architectural masterpiece, the building also offers workspaces for high-profile social organizations such as WHO, Banco Farmacéutico, Barcelona Health Hub, EMEA, UN-HABITAT and more. The cultural center also has an historical archive in which the records and documents of remarkable occurrences related to the hospital and the city can be found. The archives are open for visiting and offers information to users and researchers with the information and reprographics service, in addition to a reading room.