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:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.