 Originally built in 1637-41, it was first rebuilt in 1660 for King John II Casimir (, from whom it takes its name) and again in 1765-68, by Domenico Merlini, for the Corps of Cadets established by King Stanisław II Augustus.Since 1816, the Kazimierz Palace has served intermittently as the seat of Warsaw University (which was closed by the Russian Imperial authorities after each Uprising on the part of their Polish subjects, and in 1939-44 by the Germans).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.