Gifhorn Castle (German: Schloss Gifhorn) is a castle in Gifhorn, Germany, built between 1525 and 1581 in the Weser Renaissance style. The castle was fortified until 1790 with moats, ramparts and bastions and was never captured. In the 16th century it was the Residenz of the Duchy of Gifhorn under Duke Francis of Brunswick-Lüneburg for just 10 years.
This well-fortified castle was built in the shape of a trapezium. It was surrounded by ramparts and a moat up to 50 metres wide. The immediate vicinity could be flooded to create a swamp. Stone bastion towers were built on the four corners of the site. These were linked to the castle by underground rampart passages (Wallgänge) in the form of casemates. A 45 metre long section is preserved today that led to the north bastion. Today it is used today to house exhibitions for the castle museum. The original entrance to the castle was over a bridge on the narrow side of the castle moat in the southeast, that led to the gatehouse. Today the main entrance is through the old south bastion which has been reconstructed using sections of wall arranged in a circle. The following castle buildings are grouped around the inner courtyard:
The fortified predecessor of the castle was a moated castle on a defended, artificial hill built in the angle between the rivers Aller and Ise. According to an investigation around 1900 by the pre-historian, Carl Schuchhardt, the old castle - of which nothing remains today - was built around 1000. It is mentioned for the first time in a deed of 1296 where it is called Castrum Gifhorne. It was besieged, probably during fighting between Duke Albert the Fat and his brother, Henry the Admirable. At the end of the 13th century renovation work was carried out on the castle under the direction of Otto the Strict. As the village of Gifhorn developed, the importance of the castle grew, both for security reasons and as a customs post on a trade route. In the 14th century it was frequently enfeoffed to, amongst others, the lord of Veltheim and the town of Brunswick. In 1396 Duke Frederick transferred the castle to his wife Anna of Saxony as a life annuity. In the 15th century other tenants followed, like the von Bülows (1467), von Alvenslebens (1470), von Quitzows (1472) and von Bodendiekes (1477). During the Hildesheim Diocesan Feud the castle and town were destroyed in 1519. Both belonged at the time to the Duchy of Brunswick-Wolfenbüttel.