Gubbio is a town and comune in the far northeastern part of the Italian province of Perugia (Umbria). It is located on the lowest slope of Mt. Ingino, a small mountain of the Apennines.
The historical centre of town has a decidedly medieval aspect: the town is austere in appearance because of the dark grey stone, narrow streets, and Gothic architecture. Many houses in central Gubbio date to the 14th and 15th centuries, and were originally the dwellings of wealthy merchants. They often have a second door fronting on the street, usually just a few inches from the main entrance.
Source: Wikipedia