Aboa Vetus (Old Turku) is a museum of archaeological history. Originally, plans were for only Ars Nova, the contemporary art museum, but during its construction a number of structures and artifacts dating back to the Middle Ages were discovered, and the archaeological excavation that was commissioned eventually transformed into Aboa Vetus. The two museums were combined in 2004.
The ruins excavated in the Convent Quarter originate from the Middle Ages. In the midst of these ruins, museum visitors progress through the permanent exhibition, which focuses on the 15th century. The artefacts on display originate from the excavations carried out in the town quarter where the museum actually sits.
Reference: Aboa Vetus & Ars Nova
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.