The Kazimierz Palace was erected in 1637-41 for King Władysław IV in the mannerist-early Baroque style as a villa suburbana (suburban villa) christened the Villa Regia (Latin for "Royal Villa"), to the design of Italian architect Giovanni Trevano. It was constructed as a rectangular building with corner towers, a type of residence known as Poggio–Reale - Serlio after the Villa Poggio Reale in Naples.
