Torcello Cathedral – The Church of Santa Maria Assunta (basilica di Santa Maria Assunta) is a basilica church on the island of Torcello, Venice, northern Italy. It is a notable example of Venetian-Byzantine architecture, one of the most ancient religious edifices in the Veneto, and containing the earliest mosaics in the area of Venice.

Torcello Cathedral – Wikipedia

https://en.wikipedia.org/wiki/Torcello_Cathedral

The Church of Santa Maria Assunta (basilica di Santa Maria Assunta) is a basilica church on the island of Torcello, Venice, northern Italy. It is a notable example of Venetian-Byzantine architecture, one of the most ancient religious edifices in the Veneto, and containing the earliest mosaics in the area of Venice.