The Michelin Guide's review
Here you will see some great masterpieces such as the predella of the Profaning of the Holy Host, by Paolo Uccello, the Madonna di Senigallia and a stunning Flagellation by Piero della Francesca; also worth a mention are the Ideal City by Laurana and The Mute, by Raphael. There is also the superb small room (studiolo) where Duke Federico retired to read.