Guedelon Castle is a project started in 1997 by Michel Guyot and Maryline Martin in the Burgundy region of France. The castle is styled on typical French medieval chateau-fort, modeled on designs from the 13th century, and is being built using techniques and materials available to masons and builders 800 years ago. The Guedelon project has now become a tourist destination, and employs dozens of workers. The castle is due to be completed in 2023.