The New Castle in Hrodna, Belarus is the royal palace of Augustus III of Poland and Stanisław August Poniatowski where the infamous Grodno Sejm took place in 1793.
The royal residence was built on the high bank of the Neman River at a little distance from the Old Hrodna Castle which had suffered great dilapidation in the aftermath of the Swedish occupation in the early 18th century. The two castles are joined by a 300-year-old arch bridge.
The palace compound was designed by Carl Friedrich Pöppelmann. Construction was carried out between 1734 and 1751 under the supervision of several other Saxon architects, including Johann Friedrich Knöbel and Joachim Daniel von Jauch. The palace was completed under the direction of Giuseppe de Sacco in 1789 and remained home for King Stanisław II August until 1797.
Used as a hospital and barracks throughout most of the 19th century, the palace was renovated by the Polish administration in the interwar period. Scarcely anything is left of the original fabric of the castle, whose refined Rococo detailing vanished during World War II. There followed a hasty and rather superficial refurbishing of the palace by the Soviets with a view to making it the headquarters of a local obkom.
A plaque on the wall of the palace commemorates the council of war held in the royal residence by Tadeusz Kościuszko on 30 October 1794.
References:Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.