After much study and research, Professor Marino Viganò has come to the thesis that the “rivellino” (military protection) of Locarno Castle is the work of military engineer Leonardo da Vinci. The film follows as in an investigation all the stages that led to this 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