The small hill town of Urbino, in the Marche, experienced a great cultural flowering in the 15th century, attracting artists and scholars from all over Italy and beyond, and influencing cultural developments elsewhere in Europe. Owing to its economic and cultural stagnation from the 16th century onwards, it has preserved its Renaissance appearance to a remarkable extent.
Źródło: World Heritage Convention
http://whc.unesco.org/en/list/828