The palace had been built in 1762-65 in the Baroque style for the Voivode of Minsk, Jan August Hylzen [pl].
[2] In 1795 it became, by inheritance, the property of Tadeusz Mostowski, a prominent figure of revolutionary Poland.
[2] The palace was purchased by the government and rebuilt in 1823-24 in the classicist style to a design by Antonio Corazzi.
[2] The building became the seat of Congress Poland's Commission of Internal Affairs and Police, and a venue of concerts by Fryderyk Chopin.
In 1831, during the November Uprising, the palace was taken over for the needs of the Imperial Russian Army.