From the Wikipedia page on Palais Porcia [1] The Administrative Library of the Ministry of Interior, predecessor of the present-day library, was founded in 1849. It was based in the Ministry offices on Wipplingerstrasse, Venna, Austria. In 1897 the library moved into its own building on Marc-Aurel-Strasse, one year later it relocated to Hohen Markt. In 1925 the library relocated into recently remodelled Palais Porcia. Since the establishment of the First Austrian Republic the library remains a branch of the Federal Chancellery.