Liinmaa Castle ("Vreghdenborch") was a medieval castle in Eura. In 1367 Albrecht von Mecklenburg, the king of Sweden, ordered to demolish a castle in Kokemäki. It was replaced by two new castles, one in Liinmaa and another in Linnaluoto (Aborch). Liinmaa castle contained two inner ground walls, wooden structures and a moat. The story of Liinmaa castle was very short: it was abandoded in the beginning of the 15th century when administration was moved to Kastelholm and Turku Castles.
By the legend Liinmaa was also a camp of pirates. This may refer to Victual Brothers, a brotherhood hired in 1392 by the Albrecht von Mecklenburg to fight against Denmark.
Nowadays only some earth walls remains the history of Liinmaa castle.
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.