Museum of el Cante de las Minas (Casa del Piñón) Monument · La Unión, Campo de Cartagena, Murcia Image of La Unión, not of the place itself. Museum dedicated to mining songs and to the history of the Festival Internacional del Cante de las Minas, held since 1961, housed in the Casa del Piñón. This building, the work of architect Pedro Cerdán, is an example of the beaux-arts eclecticism that characterises the civil heritage of La Unión, linked to the town's mining prosperity. Photo: Danielyepes70 (CC BY-SA 3.0) What to see and do in La Unión