The Monastery of Santa Juliana is a historic religious site located in Santillana del Mar, Spain. Founded in the 12th century, it was originally a Benedictine monastery dedicated to Saint Juliana. The complex features Romanesque architecture, with notable elements such as intricate stone carvings and a beautiful cloister. Today, the monastery serves as a museum, showcasing artifacts and artworks from its long history. Visitors can explore the well-preserved structures and learn about the monastic life that once thrived there. The site is an important cultural landmark, attracting tourists interested in history and architecture.