Roskilde Abbey or Our Lady's Abbey was a monastery of nuns dedicated to Saint Mary the Virgin. It was founded in the early 12th century for Benedictine nuns, but in 1177 became part of the Cistercian reform movement.
It was chiefly known for the tomb of Saint Margrethe or Margaret of Ølsemagle or of Højelse (both names of places near Køge), who, although murdered by her husband, had been wrongly buried as a suicide on the beach at Køge. After miracles were declared to have happened round her grave, her remains were moved to the Abbey Church, the Vor Frue church, in 1176 by Absalon of Lund, Bishop of Roskilde, a kinsman of Margrethe; he arranged for the construction of a suitable shrine in the church, and transferred the nunnery to the Cistercians in the following year. Despite Absalon's best efforts, and also despite the local veneration, Margrethe was never formally canonised. The shrine was nevertheless later declared a place of pilgrimage by the Pope, and the nuns were allotted one third of the income generated by it. Despite all efforts, however, the center of the cultus remained the small chapel built near Margrethe's original grave on the beach.
The abbey was suppressed in 1536 during the Protestant Reformation in Denmark. Around 1600 the convent buildings and the eastern half of the church were demolished. Today the former abbey church has a beautiful furniture from the 17th century.
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.