Hallwyl Castle is one of the most important moated castles in Switzerland. It is located on two islands in the River Aabach, just north of the northern end of Lake Hallwil. Since 1925, it has been open to the public, and since 1994 it has been owned by the canton of Aargau and is part of the museum of Aargau.
The first mention of the castle is in the year 1256. However, the originally free noble family of Hallwyl were first mentioned in a testament from 1167. Some discoveries indicate that the castle was founded in the late 12th century. Hallwyl Castle was the home castle of the Lords of Hallwyl, who owned the surrounding land and parts of the lake as their personal property. It consisted of a residential tower with a dry moat. In 1265 the keepwas expanded.
In the early 14th century the dry ditch was converted into a moat. The old castle tower was surrounded by a moat and a wall on what became the Rear Island. To the east of the Rear Island, an artificial island was built in the River Aabach. This island, the Front Island, was outfitted with a curtain wall, and was occupied by residential and commercial buildings. During the conquest of Aargau in 1415 by the Swiss Confederation, the castle (which was known after 1369 as the Ganerbenburg) was burnt by the Bernese troops. The castle was immediately rebuilt and expanded.
After the construction of two turrets in 1500 and 1579-1590 there was an extensive general renovation. After long neglect, the castle was partly rebuilt in neo-Gothic style in 1861 and 1870-74. However, this project was mostly reversed in 1914.
In 1925 the family foundation made an effort to preserve the castle. Since 1994, it has been in possession of the Canton of Aargau.
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.