PALACIO DE COMUNICACIONES
The Palacio de Comunicaciones.
The Palacio de Comunicaciones (Communications Palace), built by architects Antonio Palacios and Joaquín Otamendi, serves as the headquarters of the main post office.
Construction began in 1904 and the building completed in 1917.
Location: Plaza de Cibeles.
Nearest metro station: Banco de España (Line 2).