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:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.