The first church in Cherbourg, built around 435 AD, was destroyed in Norman raids in 841. Wilhelm the Conqueror ordered to build a new one in the 11th century. That church suffered badly in the Hundred Years" War and the current Gothic church was built to its ruins between 1450-1466. The Holy Trinity Church was secularized and looted during the Revolution in 1794, but rebuilt in the 19th century. The Neo-Gothic tower was erected in 1828.
The wooden pulpit dates from 1767 and altarpiece from 1814.
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.