The Monastery of San Millán de la Cogolla is a historic religious site located in the La Rioja region of Spain. Founded in the 6th century, it is known for its beautiful Romanesque architecture and significant role in the development of the Spanish language. The monastery is dedicated to Saint Emilian, a hermit who lived in the area. The complex consists of two main monasteries: San Millán de Yuso and San Millán de Suso. Both are UNESCO World Heritage Sites, recognized for their cultural importance. The monastery houses valuable manuscripts and artifacts that reflect the rich history of monastic life and the early Christian period in Spain.