For an even more fairy-tale-like atmosphere and to be immersed in the history of an 18th-century aqueduct surrounded by the forest, head to the hills around Livorno to look for the Acquedotto Leopoldino, located near Colognole. Designed in the 1700s to satisfy the need to providing water to a city whose population had tripled in less than 100 years, the aqueduct vaunts some impressive stats: 18 kilometres long and a gradient of 250 metres, the structure runs between the springs of the Morra stream and the centre of Livorno, ending at the Gran Conserva di Riseccoli, better known as the Cisternone. Following CAI trail n. 125, visitors can walk by bridges, arches, stairs and inspection huts that have been transformed into splendid Neoclassical temples. These places seem like secret landscapes nestled in a forest of centuries-old oak trees. The Acquedotto Leopoldino served the city of Livorno until the early 20th century, and still today it is used to supply small hamlets nearby. The trail is a blend between nature and architecture only a few kilometres from Livorno, home to other Tuscan water treasures, like the Terrazza Mascagni, the Fossi Medicei and the majestic boardwalk, where the smell of the sea permeates the air.