As a private town of Poland, Żółkiew was the property of the Żółkiewski, Daniłowicz, Sobieski and Radziwiłł families. During this period, most of the city's landmarks were built, including the Zhovkva Castle and St. Lawrence's Church, both founded by Stanisław Żółkiewski, the Dominican church, founded by Teofila Sobieska, a fortress-like synagogue, co-financed by King John III Sobieski, and the foundations of the king's sons: the Saint Lazarus church founded by prince James Louis Sobieski and the Holy Trinity Church, founded by prince Konstanty Władysław Sobieski.