WARSAW, Poland—In 1764, King Stanislaw August Poniatowski bought a baroque bathhouse pavilion along with a surrounding estate to build his summer retreat in Warsaw.
The bathhouse, originally designed by Dutch architect Tylman van Gameren, was extended to make the king’s neoclassical-style summer retreat, the Royal Lazienki Palace. Some of the original bathhouse décor remains inside the palace, which is more commonly known as the Palace on the Isle.