The St. Peter's Cathedral in Geneva is known as the adopted home church of John Calvin, one of the leaders of the Protestant Reformation. Inside the church is a wooden chair used by Calvin.
St. Peter's Cathedral was build between years 1160-1252, on the place where previously used to stand basilica from the 6th century. Cathedral was rebuilded several times, last reconstructions took place in 18th century. In 1397, the Chapelle des Macchabées was added to the original building and in 1752 the portico was added to the western facade. Interiors of the Cathedral were vastly demolished in 1535, when Geneva's residents accepted the Reformation and destroyed all the altars inside the cathedral, all the statues and most of the paintings in a rage. Luckily the Pulpit and some paintings at the tops of the pillars were preserved.
The cathedral has a old, spacious and rather plain interior, highlighted by shiny candle-like looking chandeliers, with beautiful shrine, several rows of benches and few chapels. Side aisles contains huge stone blocks - tombstones of church dignitaries from 15th and 16th centuries.
On the place of cathedral were recently found remains of basilica that was standing here previously, and mosaic paintings, walls, rooms and flooring from the buildings even several centuries older (dating back to the 4th century). All these historical findings are proving the existence of the city in the antiquity. There is a little museum made on the place of the Archaeological Site open for the public. You can see the artifacts and rooms found here, such as: The Roman Crypt, Monk's Cells, The Allobrogian Tomb and several Audio Shows portraying the history.
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.