The Bank of Spain (whose origins date back to 1782) is the national body that controls the banking and monetary system.
The Governor of the Bank of Spain is a member of the Governing Council of the European Central Bank, which currently controls the monetary system of the Euro zone.
The building of the image is the branch of the Bank of Spain in Murcia. This building was finished in 1931.
Situated in the heart of the Gran Vía (the city main avenue). If you want to see photos from inside: click.