The Château de Concarneau is a historic fortress located in the town of Concarneau, Brittany, France. Built in the 14th century, it was originally designed to protect the harbor and the surrounding area from invasions. The castle features impressive stone walls and a picturesque setting overlooking the sea. Today, the château serves as a popular tourist attraction, showcasing its rich history and architecture. Visitors can explore the well-preserved structures and enjoy stunning views of the Bay of Biscay. The site also hosts various cultural events and exhibitions throughout the year.