Irulegui castle is located on the Sierra de Aranguren in the municipality of Laquidáin.
During the Iron Age it there was a castro de los Vascones. This pre-Roman fort was destroyed around 76 BC. as a consequence of the rebellion.
Although there are legends that suggest the existence of the castle (or, at least, of a defensive structure in this place) during the Almanzor raids in the 11th century, the first reliable documents of the castle dates from the late 12th century.
In 1416 the castle was modernized, adding a triangular structure to the front. In 1494, the kings Catalina and Juan III (Juan de Labrit), agreed its destruction before the push of the Beaumonteses, who controlled the fortress, and consequently, the Pamplona Basin.
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.