Fort Saint Anthony is a historical fortification located in the city of Lagos, Nigeria. Built by the Portuguese in the late 15th century, it served as a strategic military outpost to protect trade routes along the West African coast. The fort played a significant role in the region's colonial history and was involved in various conflicts over the years. The structure features thick stone walls and a simple design typical of military architecture of its time. Today, Fort Saint Anthony stands as a reminder of Portugal's influence in Africa and attracts visitors interested in the region's rich history.