The Lenuci Horseshoe or the Green Horseshoe is a U-shaped system of city squares with parks in downtown 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 today's Donji grad formed the southern outskirts of Zagreb. The construction was helped by the efforts to rebuild the city after the 1880 Zagreb earthquake, and in 1889 the entire horseshoe was finished—its two ends were connected by the newly built Zagreb Botanical Garden. The park system consists of seven squares aligned on three straight lines.
The oldest part of the horseshoe is Nikola Šubić Zrinski Square. It was formed in 1826 under the name Novi terg as a new home for the livestock marketplace formerly held on today's Ban Jelačić Square. In the 1860s, it was decided that the square would be re-purposed as park, and throughout the following decades the marketplace and the fairs were gradually moved to the area of today's Republic of Croatia Square, on the western end of the horseshoe-to-be, which was entitled Sajmište. Toward the end of the century, many new palaces in the neo-renaissance style were built on Zrinski Square. The square was also decorated by busts of numerous famous Croats, as well as the Meteorological Pole in 1884 and a music pavilion in 1891. The palace of the Croatian Academy of Sciences and Arts was built on the southern edge of Zrinski Square, inside then-new Academic Square. In 1880, a devastating earthquake hit Zagreb. The idea of a horseshoe-shaped system of connected parks in central Zagreb was first presented in 1882, as part of a plan to modernise Sajmište. It included two north–south axes of greenery corresponding to the west and east side of the Lenuci Horseshoe, which were called "Western Parkway" and "Eastern Parkway" In 1887, a new urban plan was adopted, including a rectangular grid plan for today's Donji grad and incorporating the parkways. The two axes were connected in 1889 by the newly opened Zagreb Botanical Garden and the "Southern Parkway", today Ante Starčević Square. The marketplace on the western end of the new horseshoe was moved further out of the city in 1890. Sajmište was modernised, receiving a new name: University Square. The Croatian National Theatre, located in the center of the square, was opened in 1895, in time for Emperor Franz Joseph's visit. In June 2013, a fitness park was opened in Grgur Ninski Street, between the Zagreb Botanical Garden and Esplanade Hotel. On 27 September of the same year, Lenuci Horseshoe received a special award on Entente Florale, while the city of Zagreb received a silver award.
