Razumovsky built a magnificent
Neoclassic palace worthy of the representative of
Alexander I, at his own expense and to the designs of
Louis Montoyer, on the
Landstraße, quite close to Vienna, and filled it with antiquities and modern works of art. In the morning of 31 December 1814, during the preparation of a ball with the Tsar
Alexander I as guest of honor, a fire broke out in a temporary ballroom extension, setting the ballroom ablaze and burning out roomfuls of art in the back wing of the palace. Even though he was raised to Prince the following year, Razumovsky was never the same. He lived in seclusion in Vienna until his death in 1836. In 1862, the street on which Razumovsky's palace is located was named
Rasumofskygasse. ==Conversion to Roman Catholicism==