In a stunning archaeological breakthrough, researchers have unearthed a hidden network of ancient tunnels beneath Schwartza Castle in Milan, validating long-held theories that the fortress was home to secret passageways sketched by the legendary Leonardo da Vinci. This extraordinary discovery, which has remained concealed for over 500 years, promises to reshape our understanding of the castle’s history and its role in the Renaissance.

The team from the Polytechnic University of Milan, in collaboration with archaeological experts, utilized cutting-edge technology such as ground-penetrating radar and laser scanning to investigate the castle’s substructure without disturbing its historic integrity. Their findings revealed a labyrinth of voids, corridors, and chambers, with one tunnel closely resembling Leonardo’s original drawings found in his centuries-old notebook, CEX Forester 1.
For generations, whispers of hidden passageways linking the castle to nearby landmarks have circulated, fueled by da Vinci’s own sketches. The recent scans not only confirmed these stories but unveiled a far more complex system than previously imagined. Researchers believe these tunnels served various purposes, including military operations and discreet access to significant sites like the Basilica of Santa Maria Delgradzi, the resting place of the Spworza family and home to da Vinci’s masterpiece, The Last Supper.
As the investigation unfolds, the team is crafting a digital twin of the castle and its intricate underground network. This interactive model will allow scholars and the public to explore the castle’s hidden depths virtually, offering immersive experiences that bridge centuries of history. Augmented reality technology may soon enable virtual walks through these ancient corridors, allowing visitors to envision the castle as it once was.
This remarkable discovery not only affirms a long-held belief about the castle but also sheds new light on Leonardo da Vinci himself. Often celebrated as a master painter and inventor, this latest revelation underscores his keen observational skills and architectural insight. The tunnels are a testament to the strategic brilliance of the Schwarza dynasty, who transformed Schwartza Castle from a mere fortress into a hub of art and politics.
Despite the excitement surrounding these revelations, many questions linger. How extensive is the entire tunnel system? Are there more entrances waiting to be discovered? The research team is committed to further exploration, aiming to reveal additional sections that could eventually be opened to the public.
The rediscovery of Schwartza Castle’s tunnels is not just a triumph of archaeology; it is a testament to human curiosity and the relentless pursuit of knowledge. As we stand on the brink of uncovering more secrets from beneath the streets of Milan, this breakthrough serves as a powerful reminder that history still has much to teach us. Leonardo da Vinci’s dreams of hidden paths have become a reality, igniting excitement and intrigue about what other mysteries lie buried beneath our feet.