File:Clef.arc.ogive.Vezelay.png

...la clef d'arcs ogives la plus ancienne que nous connaissions se voit dans la tribune du porche de Vézelay. Toutes les voûtes de ce porche, sauf deux, sont encore dépourvues d'arêtiers; l'une de ces deux voûtes, dont la construction remonte à 1130 environ, présente, à l'intersection des deux arcs, une belle clef richement sculptée, que nous donnons (2)...

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.
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