Cascais Citadel, located in the coastal town of Cascais, Portugal, is a historic fortress that dates back to the 16th century. Originally built to protect the region from pirates and invasions, it features impressive walls and a strategic position overlooking the Atlantic Ocean. The citadel has undergone various renovations over the years, reflecting different architectural styles. Today, the citadel houses several cultural institutions, including the Cascais Cultural Center and art galleries. Visitors can explore its well-preserved structures, enjoy scenic views, and learn about the history of the area. The site is a popular destination for tourists and locals alike.