According to Adam Jarzębski's "Short Description of Warsaw" from 1643, the entrance to the Ujazdów Castle was adorned with four marble lions ("I lwy cztery generalne, Między nimi, naturalne, Właśnie żywe wyrobione, A z marmuru są zrobione; Nie odlewane to rzeczy, Mistrzowską robotą grzeczy").

[4] Between 1659 and 1665, the building housed the mint of Titus Livius Boratini, who there struck his famous boratynka, a type of copper coin.

[2][3] Again neglected, in 1674 the castle was bought by Stanisław Herakliusz Lubomirski and then rented to King Augustus II, who ordered the construction there of a new royal residence.

[2] The castle, incorporating much of the earlier constructions on the site, was built by Tylman of Gameren, a notable 17th-century architect and engineer.

[2] The castle's design was further modified by King Stanisław II August, who in 1764 commissioned Jakub Fontana, Dominik Merlini, Jean-Baptiste Pillement and Efraim Schroeger to refurbish it.

[2] The eastern and western façades were made taller by the addition of a second floor, while the post-Gameren outbuildings were also rebuilt to the height of the main building, thus creating a large courtyard.

After the outbreak of the November Uprising the hospital was enlarged to 1250 beds and an additional annex with places for 600 was opened in the nearby Łazienki complex.

An interesting feature of the staircase was a set of stone tablets placed there May 15, 1927, commemorating the names of all known Polish military medics who perished in wars between 1797 and 1920.

[6] The castle houses the Centre for Contemporary Art, with its collections and temporary exhibitions, concerts and educational workshops.

His plans are transforming the museum into the latest battleground in Poland's culture wars, which pit liberals against the governing populist Law and Justice Party, as well as other conservative groups.