Mergentheim Castle is a historic fortress located in Bad Mergentheim, Germany. Originally built in the 13th century, it served as a residence for the Teutonic Knights and later became a significant administrative center. The castle features impressive architecture, including a large courtyard and fortified walls. Today, Mergentheim Castle is a popular tourist attraction, showcasing its rich history through guided tours and exhibitions. Visitors can explore the castle's well-preserved rooms, including the Knight's Hall and the chapel, which highlight the medieval lifestyle and the importance of the Teutonic Order in the region.