 Complete the following phrase:  The Lenuci Horseshoe or the Green Horseshoe , ; Lenuci is also sometimes spelled Lenuzzi is a U-shaped system of city squares with parks in downtown Donji grad Zagreb, Croatia. The horseshoe was conceived in 1882 by Croatian urbanist Milan Lenuci. The parks were designed between 1883 and 1887, at a time when todays Donji grad formed the southern outskirts of Zagreb. The construction was helped by the efforts to rebuild the city after the 