The infobox gives construction from 1660 and completion in 1819 to 1822, while the text says it was erected in 1660 and remodeled in the early 1800s. The present building is the latest of several on the site. The article names no architect and gives no dimensions or materials. The infobox lists Neoclassical, Palladian, and the lead says neoclassical.
King Stanisław August Poniatowski used the site as a porcelain factory. Grand Duke Constantine lived there from 1818 and fled at the start of the 1830 uprising. Józef Piłsudski used it between the wars and died there in 1935. It was extensively remodeled for Hans Frank in World War II, and the article says it is one of the few original structures in Warsaw to survive the war.
Poland made it a Historic Monument in 1994. It is used for ceremonies and as a guest house for visiting heads of state, and is not a museum.

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