| Windsor Castle | 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. 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.
Fontainebleau, part first floor plan.
the Great House, Leyton, Plate 4: First floor plan | British History Online
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Brents Brook, the Residence of J. E. Boehm, Holmwood, Surrey, England, UK, 1881, Robert W. Edis