According the tradition the first castle in Bricquebec was built by Anslec with Scandinavian origin, who was related to the Duke of Normandy, William Longsword. Later Bricquebec Castle was owned by Robert I Bertran, who accompanied William the Conqueror in the conquest of England in 1066. His son, Robert II Bertran, is believed to have taken part in the taking of Jerusalem during the First Crusade in 1096. After the annexation of Normandy by the King of France, Philippe II Auguste, in 1204, the Bertrans did homage to him, for fifteen noble fiefs held from their barony of Bricquebec.
Myth has it that in 1270 the Knights Templar, who already had numerous other possessions in the area, founded a commandery in the castle, based on the architectural layout of the castle. The 13th century, 22 meters high, 11-sided keep stands on a 17 meters high motte and its outer walls resemble the octagonal geometry which was characteristic of the Order.
After the death of the last of the Bertrans, Bricquebec Castle went to the Paisnel family through marriage. During the 14th century the plague and famines ravaged the Cotentin peninsula and it was also the scene of multiple skirmishes between French, English and Navarrian troops. In 1418 the castle was occupied by the troops of King Henry V of England. Given to William de la Pole, Earl of Suffolk, then sold by him to captain Bertin Entwistle, the castle stayed under English rule until 1450. In 1452 Louis d'Estouteville took possession of the castle.
In the 16th century the barons of Bricquebec abandoned the castle in favor of their newer manors. In 1857 the castle was visited by Queen Victoria of England and in 1957 by Field Marshall Montgoméry.
At present there is a hotel inside the castle which has its website at Hostellerie du Château Bricquebec. The keep, amongst other parts of the castle, can be visited during summer months.References:
The Petersberg Citadel is one of the largest extant early-modern citadels in Europe and covers the whole north-western part of the Erfurt city centre. It was built after 1665 on Petersberg hill and was in military use until 1963. It dates from a time when Erfurt was ruled by the Electors of Mainz and is a unique example of the European style of fortress construction. Beneath the citadel is an underground maze of passageways that can be visited on guided tours organised by Erfurt Tourist Office.
The citadel was originally built on the site of a medieval Benedictine Monastery and the earliest parts of the complex date from the 12th century. Erfurt has also been ruled by Sweden, Prussia, Napoleon, the German Empire, the Nazis, and post-World War II Soviet occupying forces, and it was part of the German Democratic Republic (East Germany). All of these regimes used Petersberg Citadel and had an influence on its development. The baroque fortress was in military use until 1963. Since German reunification in 1990, the citadel has undergone significant restoration and it is now open to the public as a historic site.