Lykkesholm manor is beautifully situated at the end of a tunnel valley by a lake surrounded by woodland. In a branch of the valley lies Lykkesholm's predecessor, Magelund Voldsted, the site of one of Denmark's largest and strongest fortified castle mounds from the Middle Ages. There once stood a large fortress here, but only the impressive ramparts remain today. The castle mounds is 15 m high and 70 m long. Towards the south and east, there are large earth mounds, and to the north and west there was once a lake. The castle mound has been cleared of woodland and, today, grazing sheep ensure that the area remains free of threes and bushes, allowing a clear view of the ancient monument.
The ramparts and the castle are throught to have been built at the end of the 12th century and are first mentioned in 1329 when they were reinforced due to the unsettled times. The kingdom was on the verge of collapse as there were power issues between the king and his magnates.
When, in the mid 14th century, King Valdemar had settled his score with the Counts of Holstein, he turned on the Danish magnates and many castles were destroyed in the process. His daughter, Queen Margrethe, followed in her farther's footsteps. Any castles and fortifications that did not belong to the crown, or that were not owned by loyal subjects, had to go. In 1391, Queen Margrethe acquired the castle Magelund, which she made over to her loyal squire Henneke Olufsen Bjørn.
Magelund is similar to castle mounds such as Søbygård on the Island of Ærø, Ørkild in Svendborg and Hindsgavl near Middelfart.
There is access to the castle mound through gates in the fence.