The building was commissioned by king
Frederick William I of Prussia, and constructed between 1726 and 1729. It was designed by architect Gerhard Cornelius von Walrave, while the construction was overseen by Hans J. Reinecke and J.H. Trippel. The façade sculptures were done by Barthelémy Damart. It housed the Pomeranian Estates Assembly, a governing body of the
Province of Pomerania, and also served as the royal residence for when the king would visit the city. On 10 October 1793, in front of the building, at the nearby
Polish Soldier Square (then known as the
White Parade Square), was unveiled a marble
statue of
Frederick the Great, the
King of Prussia and
Elector of Brandenburg from 1740 to 1786, made by
Johann Gottfried Schadow. In 1877, as it began deteriorating due to atmospheric damage, it was relocated inside. It was removed in 1942, and returned to the building in 2015. In 1823, the Estates Assembly was replaced by the Provincial Assembly of the
Province of Pomerania, which continued to use the building. It was expanded between 1885 and 1888, with addition of a new wing, and enlargement of the old wing at Staromłyńska Street. The building was renovated between 1926 and 1927, and in 1928, it began housing the Pomeranian State Museum (). Currently, it houses its administration, and the division known as the Museum of Regional Traditions. == Characteristics ==