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The Foundation and Strategic Location

You might picture a medieval castle as a massive stone fortress, but Kenilworth actually started life as a simple mound of earth and wood.
The castle was founded in the early 1120s by Geoffrey de Clinton, who served as Chamberlain and Treasurer to King Henry I.
De Clinton built the castle to counterbalance the growing regional power of his political rival, Roger de Beaumont, the Earl of Warwick.
The original layout was a classic motte and bailey design. It featured timber buildings sitting on a raised earth mound (the motte) and an enclosed lower courtyard (the bailey), protected by a ditch and a wooden palisade.
The site was chosen specifically for its geography using the 'S.S. rule': it sat on a low sandstone ridge that provided solid foundations to prevent enemy tunneling, and it was located at the junction of two streams (the Finham and Inchford Brooks) to create water defences.

The Transition to Stone: The Great Tower

A timber fortress is quick to build, but it is highly vulnerable to fire and rot.
To create a permanent stronghold, construction of a stone Great Tower began around 1124 using locally quarried red sandstone.
This central building is a hall keep. Unlike later tall, narrow towers, it was designed to be wider than it was high to accommodate both military and administrative functions.
The structure was massive, originally standing 24 metres high with dimensions of approximately 24m by 19m.
It featured exceptionally thick walls, measuring between 4.3 and 6 metres thick, which were designed specifically to withstand bombardment from siege engines.

Key Architectural Features of the Great Tower

The structure was not a simple square block; it featured four massive square corner turrets that acted as pilaster buttresses to provide immense structural stability.
The south-east turret held a crucial defensive feature: a deep well to ensure the garrison had a safe water supply during a siege.

Students often refer to the main stone structure simply as the 'keep', but OCR examiners prefer the term 'Great Tower' to reflect its dual role as a high-status residence and a fortress.

For 'Describe' questions on the physical layout, examiners expect you to give specific evidence, such as the 4.3m to 6m wall thickness or the specific names of towers (e.g., Lunn's Tower).

Always link the physical shape of a castle feature to its defensive function, such as explaining that the circular shape of Lunn's Tower was chosen specifically to prevent attackers from undermining its corners.

An early Norman castle design consisting of a raised earth mound topped with a tower, and an enclosed lower courtyard protected by a ditch and wooden fence.

The main fortified central structure of a castle, designed to serve as both a high-status residence and an ultimate defensive stronghold.

A type of castle keep that is wider than it is high, providing substantial internal space for a large hall and administrative functions.

A shallow, rectangular column built against a wall to provide additional structural strength and stability.

A defensive stone structure built against the side of a keep to protect the main entrance staircase from direct enemy attack.

The vaulted ground-floor or basement level of a medieval building, typically used for storage and housing servants.

A tall, thick defensive outer wall built to connect towers and completely enclose the courtyard of a castle.

Vertical defensive slits in a castle wall that flare outwards at the bottom, allowing archers to shoot at a wider downward angle.

The massive, 100-acre artificial lake that surrounded the west and south sides of Kenilworth Castle to provide water defences.

A large, crescent-shaped fortified earthwork built to protect the outer end of the dam and the main approach to Kenilworth Castle.

The deliberate destruction or damaging of a castle's defensive structures to render it militarily useless.