The Old City Hall is a complex of three adjacent buildings located in the Gradec neighbourhood in Zagreb, Croatia. The three buildings were joined in the late 19th century and since then, the complex has served as the place where all sessions of the city assembly are held.

The Croatian Parliament or the Sabor is the unicameral legislature of Croatia. Under the terms of the Croatian Constitution, the Sabor represents the people and is vested with legislative power. The Sabor is composed of 151 members elected to a four-year term on the basis of direct, universal and equal suffrage by secret ballot. Seats are allocated according to the Croatian Parliament electoral districts: 140 members of the parliament are elected in multi-seat constituencies. An additional three seats are reserved for the diaspora and Croats in Bosnia and Herzegovina, while national minorities have eight places reserved in parliament. The Sabor is presided over by a Speaker, who is assisted by at least one deputy speaker.