Fort Saint Louis is a historic fortification located in the city of La Rochelle, France. Built in the 17th century, it was designed to protect the harbor and the surrounding area from naval attacks. The fort features thick stone walls and a strategic position overlooking the sea, making it an important military site during its time. Today, Fort Saint Louis is a popular tourist attraction, showcasing the architectural style of the period. Visitors can explore its grounds and learn about its history, including its role in the conflicts between France and other nations. The fort remains a symbol of La Rochelle's maritime heritage.