The existence of the Fort Risban was first mentioned when it was besieged by the English in November 1346. Edward III of England's troops, finding the defences of Calais impenetrable, decided to erect a small fort to prevent any supplies reaching the town by sea, with a view to starving the inhabitants into submission. Under the English occupation the wooden tower was replaced by a stone structure, the Stone Tower, after 1400 renamed Lancaster Tower, a name often given to the fort itself.
Fort Risban was used by the English forces until 1558 when Calais was restored to France. In 1596, the fort was captured by the Spanish until May 1598 when it was returned to the French following the Treaty of Vervins. It was rebuilt in 1640. Vauban, who visited the fort some time in the 1680s, described it as 'a home for owls, and place to hold the Sabbath' rather than a fortification and let the fortress be altered. In the 19th century the Engineers Corps altered it again. The sea-fortress was dismantled in 1908 but fortified again during World War II when it served as an air raid shelter.
References:Inverness Castle sits on a cliff overlooking the River Ness. The red sandstone structure evident today was built in 1836 by architect William Burn. It is built on the site of an 11th-century (c. 1057) defensive structure. Today, it houses Inverness Sheriff Court.
The castle is said to have been built by Máel Coluim III of Scotland, after he had razed to the ground the castle in which Macbeth of Scotland according to much later tradition, murdered Máel Coluim"s father Donnchad I of Scotland, and which stood on a hill around 1 km to the north-east.
The first Inverness Castle was partially destroyed by King Robert I of Scotland and a replacement castle was sacked in the 15th century by the Clan Donald during the Siege of Inverness (1429). The castle was occupied during the Raid on Ross in 1491.
In 1548 another castle with tower was completed by George Gordon, 4th Earl of Huntly (1514–1562). He was constable of the castle until 1562.