The Palace on the Isle, also known as the Baths Palace, is a classicist palace in Warsaw's Royal Baths Park, the city's largest park, occupying over 76 hectares of the city center.

Stanisław II August, known also by his regnal Latin name Stanislaus II Augustus, and as Stanisław August Poniatowski, was King of Poland and Grand Duke of Lithuania from 1764 to 1795, and the last monarch of the Polish–Lithuanian Commonwealth.