 Over five months in 1997, Guyot raised €400,000 from the European Union, local and the central French governments, and commercial entities.A former sandstone quarry, located in a woodland two hours south of Paris, was chosen as the site of Guédelon Castle because of its relative elevation and abundance in natural resources, whose transport would be expensive in the Middle Ages.Permission for construction was given by the commune of Treigny on 25 July 1997, and ground was broken the following year with the clearing of the site and the erection of the first workshops.