Bustiello mining village Monument · Mieres, Caudal, Asturias A settlement built between 1890 and 1906 by the Marquis of Comillas's Sociedad Hullera Española, with housing graded according to job, a church, schools, a sanatorium and a Catholic workers' club. It was declared a Bien de Interés Cultural (Spain's highest level of heritage protection) in 2017 along with the Santa Bárbara barracks. Photo: Roberto Alvarez Epsinedo (CC BY-SA 3.0) What to see and do in Mieres