Store Magleby Church was originally built some time between 1193 and 1370. King Christian gave it to the Dutch farmers who had settled on Amager. They renovated and expanded the church in 1611. The current appearance of the church dates from 1731 when it underwent major alterations. The longhouse nave is 36 metres long and 16 metres wide and is terminated by a three-sided chancel to the east while a flèche tops the roof to the west.
The stucco decorations, altarpiece, and pews all date from the 1850s. The altarpiece's original painting by Thomas Wagner from 1860 was replaced by a Eucharist painting by Thomas Kluge in 2012. The remains of a catechism altarpiece from 1480 is seen on the north wall.
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.