The historic Casona de Arnao in Asturias goes on sale for 2.5 million euros

The Casona de Arnao, a historic asset linked to the Asturian mining elite, has come onto the real estate market.

The property, valued at 2.5 million euros, sits on a plot of more than 20,000 square metres in the municipality of Castrillón.

Its location near the Arnao mine —the only submarine coal mine in Europe— makes it a unique piece of industrial and architectural heritage.

Known as the Casa de los Sitges, the mansion was historically linked to the business elite of the Real Compañía Asturiana de Minas, the forerunner of Asturiana de Zinc. It served as a stately residence and a symbol of the economic power of its era. In its early days, it was owned by the Sitges family of Belgian origin, who had connections with the Spanish royal court from the beginning of the reign of Juan Carlos I.

The property passed into the hands of the Loya family in the 1990s, who at one time considered using the estate as a venue for weddings and banquets. The sale process is being coordinated by Asturias Relocation & Legal Globe, with strategic advice from Alejandro García Villanueva and the architectural firm A-9 led by José Ramón Fernández Blanco.

For InasTour, the sale of the Casona de Arnao represents a unique opportunity to acquire a property of exceptional historical and landscape value, one that combines architectural heritage with a privileged natural setting on the Asturian coast.

The Casona de Arnao is more than a real estate asset; it is a tangible piece of Asturian history, standing at the crossroads of industrial heritage, aristocratic legacy, and coastal beauty. Its future —whether as a private residence, a boutique hotel, or a cultural space— will depend on the vision of the investor who finally takes on the challenge of restoring this emblematic property.