The Castle of Setúbal is a historic fortress located in the city of Setúbal, Portugal. Built in the 16th century, it was constructed to protect the region from invasions and to oversee the nearby Sado River. The castle features impressive walls and towers, offering panoramic views of the surrounding area. Today, the castle is a popular tourist attraction, allowing visitors to explore its ancient architecture and learn about its history. The site is also a great spot for photography, with scenic vistas of the city and the Arrábida Natural Park in the background.