The National Museum of American History opened in 1964. In 1980, the museum was renamed the National Museum of American History to represent its mission of the collection, care, study, and interpretation of objects that reflect the experience of the American people. The museum is part of the Smithsonian Institution and located on the National Mall.
Each wing of the museum's three exhibition floors is anchored by a landmark object to highlight the theme of that wing. These include the John Bull locomotive, the Greensboro, North Carolina lunch counter, and a one of a kind draft wheel. Landmarks from pre-existing exhibits include the 1865 Vassar Telescope, a George Washington Statue, a Red Cross ambulance, and a car from Disneyland's Dumbo Flying Elephant ride.
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.