The Neue Burg (New Castle) wing is the most recent addition to the Hofburg complex and was built from 1881 to 1913 as the residence of
Archduke Franz Ferdinand, whose assassination at Sarajevo by Serbian nationalists led to Austria-Hungary's declaration of war against Serbia
and finally World War I. The Neue Burg currently houses a number of museums (the Ephesus Museum, the Collection of Arms and Armor,
the Collection of Ancient Musical Instruments, and the Museum of Ethnology) as well as the reading rooms of the Austrian National Library
and the Hofburg Congress Center.
On top the is an inscription
"HIS AEDIBVS ADHAERET CONCORS POPVLORVM AMOR"
which is freely translated
In this building I reconciled the love of the nations (peoples)