It was then decided that this function should have its own building, in part due to the volume of mail being handled annually at that time, which was about 130 million pieces.

The foundation laid was a new technique called "Chicago" consisting of a concrete slab with a thickness of 70 cm reinforced with steel beams.

The exterior is covered in decorative details such as iron dragon light fixtures and intricately carved stone around the windows and the edge of the roof.

The main entrance has a large ironwork canopy which is typical of the Art Nouveau that was fashionable in the early 20th century.

[3] The gallery on the fourth floor consists of slender Solomonic columns and a filigree cresting that surrounds the entire building.

[5] Inside, the marble floors and shelves combine with bronze and iron window frames manufactured in Florence, Italy.

[5] The meeting room contains frescos by Bartolomé Gallotti painted over a base of 24 carat gold, with themes relating to the history of written communication and the sending of messages.

[3] These efforts were significantly helped by the large number of graphic representations of the structure as it originally appeared and other documents kept by the National Archives.

[4] Restoration began with the structure of the building, repairing and reinforcing the columns and steel beams damaged by the earthquake.

Section D covers the Mexican Revolution from 1910 to 1920, including the battle between the "Tampico" and the "Guerrero" as well as the United States occupation of Veracruz.

The last section, F, is titled "Contemporary Mexico" from 1970 to 2004, which focuses on the Mexican Navy's latest acquisitions as well as future projects.

[6] Paintings are mostly portraits such as those of Pedro Sainz de Baranda y Borreyro, Blas Godínez Brito, José Sebastián Holzinger, Lieutenant José Azueta Abad, Cadete Virgilio and Uribe Roble and of historical events such as the defense of the Fort of San Juan de Ulúa during the failed French Intervention in Mexico, the bombing of the Port of Veracruz in 1846, the lake battle of the Spanish Conquest of Tenochtitlan, the naval battle between the "Tampico" and the "Guerrero", and the sinking of the "Potrero del Llano.