Wikipedia: Château de Fontainebleau - An illustrated description and history from the collaborative online encyclopedia of the magnificent palace that acted as a country house for French monarchs for centuries. - http://en.wikipedia.org/wiki/Ch%C3%A2teau_de_Fontainebleau
Versailles, France - Elegant bilingual official site offering history, guided tour via an interactive map, 360-degree panoramas, gallery of masterpieces and visitor information. - http://www.chateauversailles.fr/
The Louvre - Publisher's description of this history by Alexandra Bonfante-Warren of the palace in Paris now one of the world's great museums, with excerpts. - http://www.hlla.com/catalog/louvre.html