Caergwrle Castle is located in the town of Caergwrle, in Flintshire, Wales. Believed to have been preceded by a hill fort, it was constructed in 1277 by Dafydd ap Gruffydd under the reward of King Edward I. The castle had notable features such as D-shaped towers and a circular keep. It was partially destroyed during Dafydd's revolt in 1282 but was restored by Reginald de Grey. Edward gifted the castle to his wife Eleanor of Castile but it suffered damage in a fire. Subsequent repairs were not made, and the castle fell into ruin. Caergwrle Bowl, an archaeological find from the Bronze Age, was discovered in the vicinity in 1823. Excavations were conducted in the late 20th century, and the castle ruins are now maintained by Caergwrle Community Council. The site is listed as a Grade I structure.
References: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.