The Castle of Segonzano was built in the 13th century on a rock spur, around 100 meters above the valley. The place where it's placed was probably the site of a prehistoric hillfort. Built by Rodolfo Scancio, on the authority of the Prince-Bishop of Trento, Federico Vanga, the castle served as an important fortified site guarding the trade route passing through the Adige Valley and across the Cantilaga bridge on the river Avisio.
The fortress became hugely important between the 14th and 15th centuries. In the 14th century it was owned by the Scancio, Rottenburg and Greifenstein families and then passed, in 1424, to the Dukes of Tyrol.
When German painter Albrecht Dürer passed here on his first journey to Venice in 1494, he was so impressed by the gloomy walls of the fortress, that he dedicated two celebrated watercolours to it. In 1971, Durer's historic visit to the site was commemorated by two porphyry pillars, at Faver and Piazzo di Segonzano, marking the locations from which he was inspired to paint the two views.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.