After extensive study and research, Professor Marino Viganò advances the thesis that the rivellino, the defensive military structure of Locarno Castle, was designed by Leonardo da Vinci.

The film follows this hypothesis like an investigation, retracing all the steps that led to such a fascinating conclusion.

A production: La Sarraz Pictures

In co-production: Media Tree (CH)

With the support of: MT Channel (I), Ente Turistico Lago Maggiore

Distributed by: La Sarraz Distribution

Director: Alessandro Borrelli

Editing: Andrea Nobile

Original language: Italian