Nicolò Pacassi (5 March 1716 – 11 November 1790), also known as Nikolaus Pacassi, was an Italian-Austrian architect. He was born in Wiener Neustadt in Lower Austria in a family of merchants from Gorizia. In 1753, he was appointed court architect to Maria Theresa of Austria. He was commissioned many works throughout the Austrian Empire, mainly in Vienna, Prague, Innsbruck, Buda and his native Gorizia and Gradisca. He died in Vienna. Works 1743 extension of Schloss Hetzendorf 1745–47 extension of Schönbrunn Palace including Schlosstheater Schönbrunn 1749–58 Buda Castle 1753–54 extension of Spanish Hall of Prague Castle 1753–75 Royal Palace of Prague Castle 1761–63 Rebuilt the Theater am Kärntnertor, Vienna (illustration) 1770 Reconstruction of Prague's cathedral St Vitus' tower 1766 Extension of Ballhausplatz Palazzo Attems Petzenstein in Gorizia 1784 Josephinum - designed as the Academy for Military Surgeons, sponsored by Emperor Joseph II References Architects from Vienna Austrian people of Italian descent People from Wiener Neustadt People from Gorizia 1716 births 1790 deaths