The island is 275 m (902 ft) long (north/south) and is 140 m (459 ft) wide (east/west). The little island, just west of the lakeshore village of Orta San Giulio, has very picturesque buildings and takes its name from a local patron saint (Julius of Novara), who lived in the second half of the 4th century. The Church of San Giulio, Castellanza, which is located in Castellanza, Varese, northern Italy, was named after the island.
The island is inhabited permanently by few families and the most historically relevant buildings are the Basilica di San Giulio and the Mater Ecclesiae Abbey. Most of the houses on the island are holiday houses or second houses.
History
The human presence dates back to the Neolithic and the Iron Age. According to the legend of Julius of Novara's life, during the Roman period the island was abandoned. It is possible, though, that the island was a pre-Christian cultural centre. This would explain why Julius of Novara decided to build here the first church. In the 5th century, a small chapel (oratory) was erected on the island, probably to commemorate the evangelizer Saint Julius, who had died there. According to the tradition, Onorato, 7th bishop of Novara, acknowledged the strategic position of the island as difensive bulwark against a possible invader from the Sempione. From archaeological finds, it is known that a new, larger church already existed in the 6th century: here Filacrio, the bishop of Novara, asked to be buried. Around the same time, an octagonal building - probably a baptistery - was erected in the middle of the island. In the XI century the island was described by Arnulf of Milan as inexpugnabile municipium.
In the Lombard period the island had a fortress and, according to Paul the Deacon, Duke Mimulfo lived and died here in 590. For more than four centuries there is no mention of the island, but it is mentioned in 957 when Berengar II escaped here with his son Adalbert. They were besieged by Liudolf and Berengar II was defeated; but with the death of Liudolf, Berengar regained control until the conquest of Pavia by Otto the Great in 961. Berengar withdrew to the Fortress of San Leo, while his wife Willa withdrew to the island bringing with herself all the treasures in the palace of Pavia. Waiting for a siege, she improved the fortifications, whose large walls were called "Queen Willa's walls" . The siege began in May 962 and it lasted two months. After defeating Willa, Otto II seized the treasures, but let the queen reunite with her husband in San Leo. The religious reformer William of Volpiano (Saint William of Dijon) was born on the island in 962, in the fortified castle located on the island.
Every trace of it disappeared in the 19th century when the massive building of the seminary was built. In the 12th century, a new romanesquebasilica was built, thus altering the previous one to some extent.
