Wiston Castle is a motte and bailey castle in the Pembrokeshire village of Wiston. The castle and village were founded by Wizo, a Flemish settler who was granted the land by Henry I of England after he had wrested control from the previous owner, Arnulf de Montgomery (who was in revolt against Henry). The castle was captured by the Welsh on several occasions but on each occasion it was retaken. It was abandoned during the thirteenth century when the then owner moved to nearby Picton Castle.
Wiston Castle is considered one of the best preserved motte-and-bailey castles in Wales. It is built on the summit of a hill to the north of Wiston with the motte about 9 m above the base of the ditch. Surrounding the flat top there is a shell-keep that would have been the main fortification inside which all the buildings, mostly made of timber, would have been placed. The external face of the shell-keep is polygonal, with eighteen short sections, but some of these have subsided into the ditch on the north side. The inside of the shell-keep is circular. There is an arched entrance on the south side and on either side of this there are draw-bar holes which would have been used to secure the main gate. Inside is a large, oval bailey protected by a well-preserved bank. The lord's main residence would have been inside the bailey.
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.