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11th and 12th centuries

The Round Tower in the Middle Ward, built by Henry II and remodelled in the 19th century

Windsor Castle was originally built by William the Conqueror in the decade after the Norman conquest of 1066. William established a defensive ring of motte and bailey castles around London

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Windsor Castle is a royal residence at Windsor in the English county of Berkshire. It is notable for its long association with the English and later British royal family and for its architecture.

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The original castle was built in the 11th century after the Norman invasion of England by William the Conqueror. Since the time of Henry I, it has been used by the reigning monarch and is the longest-occupied palace in Europe. The castle's lavish early 19th-century State Apartments were described by the art historian Hugh Roberts as "a superb and unrivalled sequence of rooms widely regarded as the finest and most complete expression of later Georgian taste"

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Inside the castle walls is the 15th-century St George's Chapel, considered by the historian John Martin Robinson to be "one of the supreme achievements of English Perpendicular Gothic" design

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19th century

The Lower Ward in 1840, by Joseph Nash, showing the Military Knights attending chapel on a Sunday morning George IV came to the throne in 1820 intending to create a set of royal palaces that reflected his wealth and influence as the ruler of an increasingly powerful Britain.