The Fortress of Niebla is a historic military structure located in the province of Huelva, Spain. Built in the 15th century, it was designed to protect the coastal area from invasions and piracy. The fortress features impressive stone walls and towers, showcasing the architectural style of its time. Today, the fortress is a popular tourist attraction, offering visitors a glimpse into Spain's rich history. It is situated near the Guadalquivir River and provides scenic views of the surrounding landscape. The site is also a reminder of the strategic importance of coastal defenses during the Age of Exploration.