Visconti Castle of Trezzo was a mediaeval castle built between 1370 and 1377 by Bernabò Visconti, Lord of Milan, at Trezzosull'Adda, Lombardy, Northern
1385, his nephew Gian Galeazzo deposed him. Imprisoned in his castle, Trezzosull'Adda, he died a few months later, presumably from poisoning. Bernabò was