The Sabor has convened in Zagreb since the 13th century, but there was no special building for this until the 18th century. Previously, sessions of the Sabor had been held in private houses, in royal estates in Gradec and at the bishop's residence. During the Croatian-Ottoman Wars, which severely disrupted the functioning of the Croatian kingdom, the Sabor's sessions became so impractical that the 1685 session decided to have the ban appoint a six-member committee to do the work of the Sabor when sessions were not possible. This body became operational in 1689 and had its mandate extended through the entire 18th and into the 19th century. This "" consisted of the ban, two high clerics and three or four noblemen, and it would bring forward numerous acts; it met in various places, usually Zagreb or Varaždin, but also in Čiče, Ludbreg, Kerestinec, Vienna, Želin, Bratislava, Klenovnik, Slunj, Glina, Petrinja, Rasinja, Ptuj and Budim.