Cormons is at the foot of Mount Quarin. The remains of the old Roman road can still be seen in the heart of town. In Roman times Cormons was the most important stronghold (Castrum) in the entire defence system. In the Vth century, after the fall of the Empire, local populations fleeing from barbarian invasions to the Longobards until 568, and resisted the Avari until the beginning of the VIIth century. Cormons was the seat of the Patriarch of Aquileia from 628 to 737, the year when, following the Schism of the Three Chapters, it was moved to Cividale. Because of the constant fighting over Cormons, the resident population began to build defence structures at the foot of Mount Quarin, the so-called cente, XIIIth-century structures that are still visible in the urban structure of the old part of town. Wars between the Counts of Gorizia and the Patriarchy of Aquileia went on for years, until 1286, when the Counts of Gorizia finally gained the overhand. Cormons was a part of the County of Gorizia for over two centuries until 1497, when the castle of Cormons and other castles belonging to Gorizia were surrended to Maximilian I of Hapsburg by the last Count of Gorizia, Leonardo. As Cormons was on the border between the Hapsburg dominions and those of Venice, it was the object of constant warring. It was finally demolished in 1518. Straight after these wars that had devastated the population, the emperor Maximilian I decided, in 1518 to grant special economic rights, exempting the people of Cormons from taxes for seven years, so that they could recover from the extreme conditions of poverty caused by the conflicts. For 400 years Cormons was Austrian (even after the annexation of Friuli to the Kingdom of Italy in 1866). This was the most prosperous time for the town. It grew and took on its present features. Cormons became Italian after the First World War.