The Florentine historian Giovanni Villani records the disastrous flood of Florence of 1333, and reports on lengthy discussions which arose afterwards about the destructive power of water, presenting the argument almost in the form of a treatise. By the mysterious thread of tradition, the early discussions may have reached Leonardo (...)

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Source: Primary

Pedretti, Carlo. "Leonardo: A Study in Chronology and Style," p.10


6 years, 1 day later

A second massive addition of the main body of Siena Cathedral is planned which would have more than doubled the size of the structure by means of an entirely new nave and two aisles ranged perpendicular to the existing nave and centred on the high altar. The construction is begun under the direction of Giovanni di Agostino, better known as a sculptor.

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