The Real Felipe Fortress, a monumental structure sprawled over 70,000 square meters, stands as a testament to the colonial era's strategic military engineering. Constructed between 1747 and 1774, this fortress was designed to protect the vital port of Callao and the city of Lima from pirate attacks and foreign invasions. Its robust design and formidable defenses, including bomb-proof walls and a pentagonal layout, made it the largest Spanish military installation in the Americas at that time. Today, it serves as the Peruvian Army Museum, where visitors can explore historical military artifacts and learn about the fortress's pivotal role in Peru's history.