Original: Pienza , a town and comune in the province of Siena , in the Val d'Orcia in Tuscany ( central Italy ) , between the towns of Montepulciano and Montalcino , is the '' touchstone of Renaissance urbanism .
Simplified: In 1996 , UNESCO put the town his list as a World Heritage Site , and in 2004 the all valley , the Val dOrcia , was put on the list of UNESCOs World Cultural Landscapes .