Sant'Andrea is a small island in the Venetian Lagoon

Venetian Lagoon

The Venetian Lagoon is the enclosed bay of the Adriatic Sea in which the city of Venice is situated. Its name in the Venetian language, Laguna Veneta— cognate of Latin lacus, "lake"— has provided the international name for an enclosed, shallow embayment of saltwater, a lagoon.The Venetian Lagoon...

, northern Italy

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...

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It houses the Forte di Sant'Andrea, a large fortress built in the 16th century to defend Venice

Venice

Venice is a city in northern Italy which is renowned for the beauty of its setting, its architecture and its artworks. It is the capital of the Veneto region...

. Sant'Andrea constitutes a prolongation of the island of Vignole

Vignole

Vignole is an island in the Venetian Lagoon, northern Italy, with a surface of some 69.20 ha. It is located north-west to Venice, between the Sant'Erasmo and La Certosa islands. Vignole is actually formed by the two distinct islands, connected by a bridge.Like Sant'Erasmo, it houses a scanty...

, from which it is separated by a narrow channel, towards the Porto di San Nicolò on the Lido, between Venice's Island and the island of Sant'Erasmo

Sant'Erasmo

Sant'Erasmo is an island in the Venetian Lagoon lying north of the Lido and north east of Venice, Italy.The island was a port attached to Murano in the 8th century, but is now known for market gardening. Ruined fortifications, including the so-called Torre Massimiliana , ring the isle. Forts...

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