Executed according to the project designed by the architect Miguel Angel Navarro, the construction of the Post Office began in 1915 and was completed in 1922. It is an example of the eclectic style that predominates in official architecture. The entrance stands out, emphasised by a projecting construction, flanked by two Ionic columns with an arch including allegoric figures at the top. This leads to the two-story main hall, covered by an elliptic glass dome, which is the nucleus around which the building is organised.