San Pedro de Arlanza is a ruined Benedictine monastery located in the valley of the river Arlanza in Hortigüela, Burgos. Founded in 912, it has been called the 'cradle of Castile' (cuna de Castilla). It was abandoned in 1841 during the confiscations the government of Juan Álvarez Mendizábal, when ecclesiastical properties were roundly redistributed.
San Pedro's two purported founding documents, preserved in twelfth-century cartulary, were issued one by Count Fernán González and his wife, Sancha, and the other by Fernán's mother and brother, Muniadona Ramírez and Ramiro González, with Count Gonzalo Téllez and his wife, Flamula. Both documents suffer from certain inconsistencies and anachronisms that have cast doubts on their authenticity, especially that of Fernán González. It was probably forged to give the monastery a more illustrious lineage than it could prove to have. The copy of the charter of Gonzalo Téllez is more likely to be based on reality, since Gonzalo is known to have been active in 912. Fernán González and Sancha were buried at San Pedro, however, and remained there until the dispersal of the monastic community in 1841 necessitated the removal of their sarcophagi to the collegiate church of San Cosme y San Damián at Covarrubias.
The present ruins of the church are those of the building begun in 1080. It had three naves and three semicircular apses in the Romanesque style. Later modifications in the Gothic style transformed the outward appearance, but some of its eleventh-century capitals have been preserved. Among the ruins the three apses still stand, as do the tower (erected towards the close of the twelfth century), part of the cloisters and the chapter house, and the double-aperture and the tympanum above the main façade. The portal of the church was transferred to the National Archaeological Museum of Spain in Madrid in 1895. A large Romanesque tomb, said to belong to the legendary Mudarra González, was moved to the Cathedral of Burgos, and some frescoes have been transferred to the Metropolitan Museum of Art in New York and others (like Paintings from Arlanza) to the Museu Nacional d'Art de Catalunya in Barcelona.
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.