The Fort of San Carlos is a historic military fortification located in Cuba, specifically in the city of Havana. Built in the 18th century, it was designed to protect the harbor from potential invasions by pirates and foreign powers. The fort features thick stone walls and strategic positioning, making it a significant defensive structure during its time. Today, the fort is a popular tourist attraction, showcasing its rich history and architectural significance. Visitors can explore the grounds, learn about its role in the defense of Havana, and enjoy panoramic views of the surrounding area, including the Havana Bay.