The National Museum of Serbia (Serbian: Народни музеј Србије / Narodni muzej Srbije) is the largest and oldest museum in Belgrade, Serbia. It is located in the central zone of Belgrade on a square plot between the Republic Square, formerly Theatre Square, and three streets: Čika Ljubina, Vasina and Laze Pačua. Its main facade is on the Republic Square and the official address ia 1a Republic Square. The National Museum of Serbia building was declared a Monument of Culture of Great Importance in 1979.