Hofburg and Sisi Museum

The Hofburg in Vienna was the residence of the Habsburgs in Vienna from the 13th century until 1918 (with interruptions). Since 1945 it has been the official residence of the Austrian Federal President. It houses most of the Austrian National Library as well as various museums (including the Albertina) and the Federal Monuments Office. The irregular building complex, which grew over the course of around seven centuries, also includes two religious buildings: the Hofburg Chapel and the Augustinian Church.

Impressive setting, historically relevant. As part of the Hofburg the center of the 1st district in Vienna. Definitely worth a visit. Great.

The Hofburg in Vienna
Until 1918 the extensive castle complex in the heart of Vienna was the political center of the monarchy, today it fulfills the same function for democratic Austria. The Federal President of the Republic now resides where Emperor Joseph II once designed his revolutionary reform program, where the Congress of Vienna took place (the “Congress of Vienna danced”) and where Emperor Franz Joseph granted an audience. Numerous cultural institutions - from the Austrian National Library to the Spanish Riding School - are housed in the asymmetrical building complex with its 19 courtyards and 18 wings, which has grown over centuries.

hofburg-wien.at/ueber-den-standort/baugeschichte