Isolino Partegora is an islet situated at the centre of the gulf of Angera

Angera

Angera is a town and comune located in the province of Varese, in the Lombardy region of northern Italy. In Roman times, under the name of Angleria, it was an important lake port and road station. Angera received the title of city by Duke Ludovico il Moro of October 7, 1497. Today its major feature...

 on Lago Maggiore, the only island on the lake to fall within the Italian

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

 region Lombardy

Lombardy

Lombardy is one of the 20 regions of Italy. The capital is Milan. One-sixth of Italy's population lives in Lombardy and about one fifth of Italy's GDP is produced in this region, making it the most populous and richest region in the country and one of the richest in the whole of Europe...

. Most of the shoreline consists of marshy cane thickets, although there is a sandy beach at the southern edge of the island.

The islet is about 96 by 36 meters in size, with an area of roughly 3500 square meters.

Sass margunin, or margunée, is a submerged erratic block lying some tens of metres to the west of the island.

It is said that the saints Giuglio

Julius of Novara

Julius of Novara was a missionary priest to northern Italy.His cult is centered at Lake Orta in the Novarese highlands, and in particular on the island which has been named for him since at least the eighth century, Isola San Giulio, and where his presumed relics are preserved in the crypt,...

 and Giuliano stopped on the island. Tradition also identifies Partegora as the location of the martyrdom of Arialdo Alciato, the Milan

Milan

Milan is the second-largest city in Italy and the capital city of the region of Lombardy and of the province of Milan. The city proper has a population of about 1.3 million, while its urban area, roughly coinciding with its administrative province and the bordering Province of Monza and Brianza ,...

ese deacon

Deacon

Deacon is a ministry in the Christian Church that is generally associated with service of some kind, but which varies among theological and denominational traditions...

 and Patarine reformist who was assassinated in 1076 at the prompting of his archbishop

Archbishop

An archbishop is a bishop of higher rank, but not of higher sacramental order above that of the three orders of deacon, priest , and bishop...

, Guido da Velate

Guido da Velate

Guido da Velate was the Archbishop of Milan from 1045 until his death, though he had simoniacally abdicated in 1067...

. In 1776 Alessandro Volta

Alessandro Volta

Count Alessandro Giuseppe Antonio Anastasio Gerolamo Umberto Volta was a Lombard physicist known especially for the invention of the battery in 1800.-Early life and works:...

, while a guest of the Castiglioni family in Angera, discovered marsh gas, or methane, here.