Assisi is located at the foot of Mount Subasio, overlooking the plains of the Umbrian Valley. It has Roman origins, the development of the city and its present-day appearance is from the Middle Ages. Assisi, the birthplace of St. Francis, is a beautiful, charming medieval town , also known as The City of Peace, is rich in medieval architecture and religious artwork.

60 km from Castel di Fiori.

http://www.assisivirtual.com/turismo/guida_di_assisi/assisi_ing.htm