Rinteln Castle is a historic fortress located in the town of Rinteln, Germany. Built in the 12th century, it served as a residence for various noble families and played a significant role in regional politics. The castle features a mix of architectural styles, reflecting its long history and various renovations over the centuries. Today, Rinteln Castle is a popular tourist attraction, offering guided tours that showcase its impressive towers, walls, and interiors. Visitors can explore the castle grounds and learn about its rich history, including its connections to the Weser Renaissance and the Duchy of Brunswick-Lüneburg.