Horseshoe to the modern hoof boot. Historians differ on the origin of the horseshoe. Because iron was a valuable commodity, and any worn out items were generally reforged and reused, it is difficult to locate clear archaeological evidence. Although some credit the Druids, there is no hard evidence to support this claim. In 1897 four bronze horseshoes with what are apparently nail holes were found in an Etruscan tomb dated around 400 B.C. The assertion by some historians that the Romans invented the "mule shoes" sometime after 100 BC is supported by a reference by Catullus who died in 54 BC.
Lenuci Horseshoe park system consists of seven squares aligned on three straight lines. The squares comprising the horseshoe are arranged in three straight lines on Donji grad's grid plan, forming the west, south and east side of the horseshoe. Starting from northeast and going clockwise, the horseshoe is formed by Nikola Šubić Zrinski Square (locally known as "Zrinjevac"), Josip Juraj Strossmayer Square, King Tomislav Square, Ante Starčević Square, Lenuci fitness park, Zagreb Botanical Garden, Marko Marulić Square, Ivan Mažuranić Square and Republic of Croatia Square. The horseshoe is home to the headquarters of many organizations and institutions in Zagreb, as well as