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Mysterious tunnels sketched by Leonardo may have been found

Once only indicated through a sketch by Leonardo da Vinci from around 1495, concealed passageways have been discovered underneath the Sforza Castle in Milan, Italy.

Leonardo da Vinci excelled in the fields of art and science, but the Italian polymath was also a highly skilled expert in military structures and defensive systems, breaking new ground in the strategy of warfare during the Renaissance with . The researchers also uncovered other tunnels — almost all made of brick with a barrel vault, or curved ceiling — including one that heads in the direction of the Basilica of Santa Maria delle Grazie, the resting place of the wife of . Leonardo often spent time at the castle during the late 1400s as a member of the court of Duke Ludovico Sforza, who commissioned the artist for a painting featured in the property’s Sala delle Asse, or room of wooden boards.

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