The Deutsches Museum is the world's largest museum of science and technology, with approximately 1.5 million visitors per year and about 28,000 exhibited objects from 50 fields of science and technology.
The museum was founded on June 28, 1903, at a meeting of the Association of German Engineers as an initiative of Oskar von Miller. The main site of the Deutsches Museum is a small island in the Isar river, which had been used for rafting wood since the Middle Ages. The island did not have any buildings before 1772 because it was regularly flooded prior to the building of the Sylvensteinspeicher. In 1944, near the end of the war, the building was hit by numerous air strikes. More than 80% of the structure was destroyed.
This amazing attraction is the largest technological museum of its kind in the world and is renowned for its incredible historic artifacts, which mark important steps in the field of science and technology. Exhibits at the Deutsches Museum are many and varied and cover topics such as aerospace, astronomy, agriculture, computers, chemistry, electricity, marine navigation, mining, music, railways, and telecommunication.References:
Ängsö Castle was first named as "Engsev" in a royal charter by king Canute I of Sweden (r. 1167-1196), in which he stated that he had inherited the property after his father Eric IX of Sweden. Until 1272, it was owned by the Riseberga Abbey, and then taken over by Gregers Birgersson.
From 1475 until 1710, it was owned by the Sparre family. The current castle was built as a fortress by riksråd Bengt Fadersson Sparre in the 1480s. In 1522, Ängsö Castle was taken after a siege by king Gustav Vasa, since its owner, Fadersson's son Knut Bengtsson, sided with Christian II of Denmark. However, in 1538 it was given by the king to Bengtsson's daughter Hillevi Knutsdotter, who was married to Arvid Trolle.
In 1710, the castle was taken over by Carl Piper and Christina Piper. Ängsö Castle was owned by the Piper family from 1710 until 1971, and is now owned by the Westmanna foundation. The castle building itself was made into a museum in 1959 and was made a listed building in 1965. It is currently opened to visitors during the summers.
The castle is a cubical building in four stores made by stone and bricks. The lower parts is preserved from the middle ages. It was redecorated and expanded in the 1630s. The 4th storey as well as the roof is from the expansion of Carl Hårleman from 1740-41. It gained its current appearance in the 1740s.