Palace of Diamonds
So named thanks to the very particular shape of the more than 8,500 marble blocks that make up its rustication, the Palazzo dei Diamanti is one of the most famous Renaissance buildings in the world. Designed by Biagio Rossetti, the palace was built on behalf of Sigismondo d’Este, brother of Duke Ercole I d’Este, starting from 1493, and is the ideal centre of the so-called "Addizione Erculea" a real doubling of the city that Rossetti conceived for the Duke.