In the 7th century Venice was not yet a city, but a collection of small communities scattered throughout the lagoon. Saint Magnus, the Bishop of Oderzo, came to the lagoon and founded eight churches. According to a legend recounted by the historian Flaminio Cornaro, St. Magnus had a vision of the Twelve Apostles who commanded him to build a church on a site where he saw twelve cranes. The church presently stands on the Campo dei Santi Apostoli at the beginning of the Strada Nuova (New Road).
The church retains its 16th century layout: a single nave supported by two rows of columns. The ceiling fresco is Communion of the Apostles and the Triumph of the Eucharist by Fabio Canal. (Text based on Wikipedia).