Devizes Castle stands on the site of a mediaeval 11th century wooden castle. After the destruction of the wooden castle in 1113, it was rebuilt in stone by the Viceroy Bishop Roger. This stone castle was destroyed in 1645 when Oliver Cromwell's army bombarded it using a battery of guns in the nearby Market Square. At the start of the 18th century windmills were erected on the site for such things as rape seed for oil and tobacco snuff. During the early 19th century the South windmill was demolished to clear the site for the present South Tower. In the 1860s the building was expanded as far as the North windmill which was incorporated into the building as the North Tower. The King's House of the 12th Century Castle remains in ruins in the garden of the modern day castle. A section of stone wall about 15 foot high and including a window is embedded in a bank of soil in the garden to the rear of the castle. The Castle is said to be inhabited by a number of ghosts of former inhabitants. They include the ghost of a young woman, Isabella of Valois, who it is said was bricked up behind one of the walls as a result of forbidden relationship with a young gallant of the town. The ghost of a cavalier swordsman has also been reported, while men’s voices have also been heard, believed to be those of men that were garrisoned at the Castle during the Second World War. Dogs belonging to the residents of the castle have always been very wary of the gallery, as if watching the movements of something unseen.