The Church of Saint-Germain-l'Auxerrois was originally founded in the 7th century, but it has been rebuilt many times over several centuries. It now has construction in Roman, Gothic and Renaissance styles. The most striking exterior feature is the porch, with a rose window and a balustrade above which encircles the whole church, a work of Jean Gaussel (1435–39). Among the treasures preserved inside are a 15th-century wooden statue of Saint Germain, a stone carved statue of Saint-Vincent a stone sculpture of Isabelle of France (saint), a Flemish altarpiece carved out of wood, the famous 'churchwarden's pew' where important people sat, made in 1683 by François, Le Mercier from drawings by Charles Le Brun.
During the Wars of Religion, its bell called 'Marie' sounded on the night of 23 August 1572, marking the beginning of the St. Bartholomew's Day Massacre. Thousands of Huguenots, who visited the city for a royal wedding, were killed by the mob of Paris. A splendid stained glass still remains, in spite of plunderings during the French Revolution. The north tower was added in 1860 and stands opposite the Mairie of the 1st Arrondissement (1859).
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.