Engelsberg Ironworks in Västmanland was constructed in 1681 and developed into one of the world's most modern ironworks in the period 1700-1800. The property comprises the mansion and park, works offices, workers' homes, and industrial buildings. Engelsberg is the only ironworks in Sweden that still preserves the buildings and most of the technical equipment. Engelsberg Ironworks was inscribed on the World Heritage List in 1993.
Iron production at Engelsberg goes back to the Middle Ages, when mine-owning farmers achieved efficiency in the use of the natural riches of the Bergslagen area. It was in the 18th century, however, that Engelsberg could definitely be ranked among the most important ironworks in Sweden and Europe. The works, which was ultramodern for its time, extracted and worked iron. The ore came from the Bergslagen mines, while the charcoal, which was crucial for heating the material, came from nearby forests.
Engelsberg Ironworks eventually consisted of about fifty different buildings. Besides the log-insulated smelting house and the hammer forge there is also a weighing house where the charcoal and ore were weighed. In the day workers' building, or the "inn" as it was also called, those who worked by the day could buy spirits and find accommodation. In 1917 a Lancashire forge with a rolling mill was built. The property also comprises two works offices, the gardener's house, slagstone towers, the grain store, workers' housing, and the byre. Engelsberg Ironworks is largely preserved as it looked after the last rebuilding in 1870. Particularly unique features are the blast furnace and the forge where the waterwheel, crusher, blower, and hammer still work.
For most of the eighteenth century Engelsberg Ironworks was owned by the Söderhielm family and in the nineteenth century by the Timm family. The works was sold in 1916 to Consul General Axel Ax:son Johnson, who put it under the administration of Avesta Ironworks. Three years later operations ceased. Engelsberg Ironworks is now owned by Nordstjernan AB, who restored the property in the 1970s with the aid of the National Heritage Board. In summer Engelsberg Ironworks is open to the public.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.