Aviano is a town and comune of province of Pordenone at the foot of the Dolomites mountain range in Friuli-Venezia Giulia, northern Italy. Although Aviano has been inhabited only since the 10th century AD, evidence of a human presence dates to before the Romans entered the area in 186 BC. Most historians believe that Aviano developed with a commercial center located where present day Aviano is situated and a cultural and defensive center in the castle area. Aviano was a possession of the Patriarchal State of Friuli until 1420, when it came under the influence of the Venetian Republic. Aviano became a part of the Italian State in 1866.