St. Lorenz Basilica is a baroque minor Basilica and the former abbey church of the Benedictine Kempten Abbey. A church was built on the site in the 13th century but was burned down in 1478.
Roman Giel of Gielsberg, the Abbot of Kempten, commissioned the master builder Michael Beer from Graubünden to build a new church to serve the parish and monastery. The foundation stone of the Basilica of St. Lawrence was laid on 13 April 1652. This was one of the first large churches built in Germany after the end of the Thirty Years' War.
Michael Beer built the nave, the ground floor of the towers and the choir. He was succeeded by Johann Serro on 24 March 1654. The church was consecrated on 12 May 1748.
In 1803 the monastery was dissolved and the church became a purely parish church. In 1900 the twin towers were finally completed. They were build of concrete which is heavier than the used material before that time. Cracks at the connections to the main building are the result of the completed towers.
In 1969 Pope Paul VI bestowed the honorary title of basilica minor.
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.