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: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.