In the 15th-16th century the settlement of Keila consisted some tens of buildings and a hundred people formed around the church. At the same time the Livonian Order built a small fort south-east of the church on Jõepark. During the Livonian War of 1558-1583 the settlement was destroyed.Further hampered by the plague and starvation in 1601-1602 the population declination reduced the community to a small church village. Ruins of the fort were first excavated in 1976 with continued finds up to 2007.
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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.