Hidden Gems & Local Secrets in Siena

Because Siena was built atop three hills with no major river flowing through it, securing a reliable water supply was a matter of sheer survival. From the 12th century onwards, laborers called 'guerchi' began painstakingly carving tunnels into the porous sandstone beneath the streets. They worked in dark, claustrophobic conditions, following the natural seepage of rainwater to collect it drop by drop. These tunnels, known as the 'Bottini', fed the monumental fountains like Fontebranda and Fonte Gaia, allowing the city to dye cloth, tan leather, and sustain a booming population. The engineering was so precise and successful that the network remained the primary water source until modern plumbing was introduced in the 20th century. Today, they remain a testament to the stubborn ingenuity of a republic that refused to let geography limit its ambition.

During the intellectual boom of the Enlightenment, a group of local scholars founded the Accademia dei Fisiocritici to promote scientific inquiry and the study of the natural world. They gathered rare specimens, strange oddities, and anatomical models to further their understanding of biology and geology. The academy became a vital centre for scientific debate, starkly contrasting with the heavily religious focus of the city's earlier history. Over the centuries, the collection grew, absorbing entire archives of minerals, fossils, and taxidermy. Rather than modernizing into a sleek, interactive museum, the institution retained its original, densely packed display cases. It now serves as a museum of a museum, illustrating not just the natural world, but exactly how scholars of the 18th century viewed and categorized it.

While the wealthy merchants and noble families built grand palaces facing the wide main streets, the reality for the working class was vastly different. The urban layout was incredibly dense, and space was at a premium. Passageways like the Vicolo delle Carrozze were created by building structures directly over the streets, maximizing living space while creating dark, easily defensible alleys below. These covered alleys served as the back channels of the city, utilized by servants, tradesmen, and occasionally those looking to avoid the law. The heavy brick vaults provided structural support for the towering buildings above, showcasing the impressive, if claustrophobic, engineering skills of the era. Today, it remains a silent, shadowy reminder of the medieval city's dense and chaotic past.

Every neighbourhood in the city maintains an oratory, a dedicated church that serves as the spiritual and social anchor for the community. San Giovannino della Staffa has fulfilled this role for the Contrada del Leocorno since the 16th century. Originally a simple Romanesque building, it was heavily modified and decorated by the proud residents over the centuries, turning it into a repository of local art and identity. The church represents the unique blend of the sacred and the profane that characterizes Sienese culture. The most intense moment of its existence happens twice a year, when the neighbourhood's chosen racehorse is led directly up to the altar. The priest blesses the animal, famously commanding it to 'go and return victorious', linking religious devotion entirely to the outcome of a dirt horse race.

In medieval times, the ability to feed a city during a prolonged siege was a matter of life and death. The Republic explicitly maintained agricultural 'green belts' immediately outside, and sometimes even inside, the defensive walls. Val di Pugna was one such crucial area, providing wine, oil, and grain within sight of the city's military towers. While modern cities usually sprawl outward with suburbs and industrial zones, the economic stagnation that hit the area in the 16th century prevented this expansion. As a result, the sharp dividing line between the dense brickwork of the city and the open farmland remained frozen in time. Today, these vineyards still produce wine, stubbornly preserving the ancient relationship between the city and its immediate soil.