The Guédelon Castle under construction in Treigny, France, Sept. 13, 2016. Conceived by Michel Guyot, owner of Saint-Fargeau Castle, the project started in 1997 and the aim is to build an entire castle using nothing but tools, techniques, and materials that 13th century workers would use. The project has created jobs and is now a tourist destination, with more than 300,000 visits each year. (Photo/Agencies)
