The architectural feature of castle-like design; the process or result of adding crenellations, towers, or other fortified features to a building.
From 'castellate' (to make castle-like) plus '-ion' (suffix forming nouns from verbs). The term describes both the action of creating castle-like features and the features themselves once created.
During the Gothic Revival of the 1800s, 'castellation' was applied to everything from factories to libraries—Victorians believed that adding battlements and towers to industrial buildings would make them look noble and historic rather than dirty and utilitarian!
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