Austrian Chancellery in Vienna, Government office in Innere Stadt, Austria.

The Austrian Chancellery in Vienna is a baroque complex at Ballhausplatz 2, built from 1717 to 1719 to plans by Johann Lukas von Hildebrandt and remodelled in 1766 by Nicolò Pacassi. Its main facade has remained nearly unchanged since Hildebrandt's construction. The interior is richly decorated with stucco; the first floor holds the Federal Chancellor's offices, ministerial offices and conference rooms.

The building was constructed in 1719 and later became the center of European diplomacy, especially during the Congress of Vienna from 1814 to 1815. Representatives from many countries gathered there to reshape Europe's future after Napoleon's defeat.

The building's name comes from the Ballhaus, a 1740s ball court that once stood on the square. The chancellery's first floor holds the Federal Chancellor's offices, ministers' offices and conference rooms, where the Austrian government meets for cabinet sessions. The stucco-decorated interior reflects the building's 18th-century origins.

The building faces the Hofburg on Ballhausplatz in the first district. The baroque facade by Lukas von Hildebrandt is visible from the square at any time. The interior, including the stucco-decorated first floor where the chancellor's offices and cabinet rooms are, is not open to visitors.

During the Congress of Vienna, the building was not only a place for negotiations but also hosted grand balls and celebrations that defined the social life of European elites. This blend of politics and entertainment was later captured in the phrase 'the Congress dances'.