The city of Urbino, located in the hills of Montefeltro, was declared a UNESCO World Heritage Site in 1998. The Ducal Palace, expressly commissioned by the Duke Federico da Montefeltro,  is a great example of architecture of that period. Here we find the National Gallery of the Marche with the wonderful paintings by Piero della Francesca, Laurana and Raffaello, whose birth house is currently a museum. Of great interest are the University (1506), the Raffaello’s house, the Church of Sant' Agostino, the frescoes of St. John’s oratory dating back to the fifteenth century and the Nativity Chapel of St. Joseph’s oratory.