San Millán de la Cogolla (Spanish pronunciation: [san miˈʎan de la koˈɣoʎa]) is a sparsely populated municipality in La Rioja, (Spain). It takes its name from a 6th-century saint (Saint Emilianus or San Millán) who lived here, and from the shape of the surrounding mountains (the word cogolla means "cowl"). The village is famous for its twin monasteries, Yuso and Suso, which were declared a World Heritage Site in 1997. There were 293 inhabitants registered in 2009, the population having fallen significantly during the twentieth century.