Liberland | 5,066 followers on LinkedIn. Founded in 2015, the Free Republic of Liberland is a country on the Danube River between Croatia and Serbia. | The Free Republic of Liberland is a sovereign state located between Croatia and Serbia on the west bank of the Danube river. The nearest towns are Zmajevac (Croatia) and Bački Monoštor (Autonomous Province of Vojvodina, Serbia). On some maps, this area is referred to as “Gornja Siga”.