The Château de Nantes is a historic castle located in the city of Nantes, France. Originally built in the 15th century, it served as a residence for the Dukes of Brittany. The castle features impressive architecture, including thick stone walls and a large moat, reflecting its defensive purpose. Today, the château houses the Museum of Nantes, showcasing the region's history and culture. Visitors can explore its various rooms, gardens, and exhibitions, making it a popular tourist attraction. The site also plays a significant role in the cultural life of Nantes, hosting events and activities throughout the year.