The Fort of São Mateus is a historic military fortification located in the city of Macaé, Brazil. Built in the 17th century, it was designed to protect the region from invasions and piracy, particularly during the colonial period. The fort features thick stone walls and strategic positioning overlooking the sea, making it an important defensive structure. Today, the fort is a popular tourist attraction, offering visitors a glimpse into Brazil's colonial history. It is part of the Macaé cultural heritage and provides scenic views of the surrounding coastline, making it a significant landmark for both history enthusiasts and nature lovers.