The Fort of São Francisco do Queijo, also known as Castelo do Queijo, is a historic fortress located in Porto, Portugal. Built in the 17th century, it was designed to protect the city from potential attacks by pirates and other invaders. The fort features a unique star-shaped layout and is surrounded by a scenic park, making it a popular spot for both tourists and locals. Today, the fort serves as a cultural landmark and offers stunning views of the Atlantic Ocean. Visitors can explore its well-preserved walls and learn about its history through informative displays. The site is a testament to Portugal's rich maritime heritage.