Guédelon is a 21st-century project in Burgundy, France, reconstructing a medieval castle using authentic 13th-century techniques. This ambitious undertaking serves as a living laboratory, combining historical accuracy with modern building practices. The project emphasizes the revival of traditional building skills, sustainable construction methods, and offers training and collaboration opportunities for professionals. It aims to bridge the gap between historical heritage and contemporary architecture, promoting both the preservation of traditional crafts and environmentally conscious construction. Guédelon actively recruits professionals and volunteers, providing a unique chance to participate in a significant historical and architectural endeavor.