Treviso Cathedral originates from the 6th century and stands in an area where during the Ancient Roman period there were a temple, a theatre and possibly some baths. In the 11th-12th centuries the church was remodelled in Romanesque style. In 1768 it was demolished and rebuilt in Neoclassical style, only the crypt remaining from the previous edifice. The current façade dates from 1836. Treviso Cathedral was involved in the Good Friday bombing of 7 April 1944, having part of its library damaged by fire.
Sights in the interior include the Malchiostro Chapel, designed by Tullio and Antonio Lombardo, which was frescoed by Il Pordenone and which houses the Malchiostro Annunciation by Titian and two canvasses by Paris Bordone.
The church has an unfinished bell tower, whose construction, according to the tradition, was stopped by the Venetian government to prevent it from becoming taller than the campanile of St. Mark's Basilica. The crypt houses the tombs of the city's bishops.
The Diocesan Museum is home to a fresco by Tommaso da Modena.
References:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.