File:Donjon.La.Roche.Guyon.png

...L'élévation latérale (24) indique la pente du plateau de craie, son escarpement fait à main d'homme, la position des souterrains communiquant avec le château et les niveaux différents des parapets des deux chemises, ainsi que le commandement de la tour principale. Tout, dans cette construction entièrement dépourvue d'ornements, est profondément calculé au point de vue de la défense...

This image comes from Dictionary of French Architecture from 11th to 16th Century (1856) by Eugène Viollet-le-Duc (1814-1879).

	This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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