Levänluhta is a swampy source known for mysterious prehistoric findings. According archaeological excavations about hundred people have been buried to the former lake of Levänluhta in the Iron Age. Archaeologists have also found several remains of bronze and silver jewelry and tools.
There are remains of buried children, elderly and animals of different ages. The human bones of Levänluhta are dated to the 300-700's. They are historically thought to be sacrificed human victims, but the site can also be an ancient cemetery for people died of starvation or diseases.
Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.