Palazzo Ducale
It was built after 1470 by Federico da Montefeltro. The building inside has frescoes from the 14th century and wall decorations by artists from the 80s and 90s. The large rooms were open for the parties of the most famous characters of the time. The exterior of the building consists of two buildings connected by a courtyard. The building was sold to individuals who put all the items for sale. In doing so, they scattered in different museums around the world.