Smolenice Castle was built in the 15th century, but it was destroyed during Rákóczi's War of Independence and Napoleanic wars. In 1777, Count János Pálffy from Pezinok inherited Smolenice but did not reside in the castle due to its poor condition and lack of money for rebuilding it. The castle was rebuilt in the 20th century by order of Count József Pálffy. The architect Jozef Hubert designed the new castle by using Kreuzenstein castle near Vienna as a model, and the works were controlled by the architect Pavol Reiter from Bavaria. During its construction there were masters from Italy, Germany, Austria and Hungary, and 60 workmen from Smolenice and nearby villages. The main building has two wings and a tower, and is made of ferroconcrete.
The castle was damaged in the spring of 1945 during World War II, and in that same year the state became the owner of it. Some reconstructions have been made after 1950, and since June 26, 1953 the castle is property of the Slovak Academy of Sciences. The castle serves now as a conference centre, and it is only opened to the public in summer season.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.