Discover the hidden historic beauty of Livorno, the most important and modern port city in Tuscany. Founded in the 9th century to defend Pisa city, the attractive seaport itself boasts not only advanced infrastructure but also impressive monuments left behind by the eventful history, from the Monument of the Four Moors built in memory of the medieval battles against Moorish pirates, the mighty New Fortress defending the city during the Second World War, the Saint Mark Gate commemorating the fallen in the Independence War in the 18th century, and San Marco Theatre hosting the history-making founding congress of Italian Communist Party.