It is a construction of the XVIII century which has had a great importance from the political, economic, social and historical point of view; political for the administrative buildings that there existed, economic for the peak that had this activity and that it originates its construction partly, and social and historical for the character's span that there was born, forger of an important part of the national history.

The main entrance to this historical house is marked with the number 1 of the Calle 57( street 57), in the crossing with the Calle 10 (street 10).

The building that occupies us in this occasion has had diverse uses along the history. Between 1517 and 1776, it was part of a group of administrative buildings where they were located Jail, Audience, corn exchange and Royal House (today portals), since for the founders' of the cities general dispositions and villages novo Hispanic, all the buildings of administrative character should be located around the square.

During the period understood among 1777 at 1862, particular houses are built in substitution of the mentioned administrative buildings, before an economic peak in which Campeche crossed. Three constructions are located in this area on the Calle 10 (before , the trade street) understood among the Calle 55 and Calle 57.

It is in this historical stage of Campeche, in the house that makes corner with the Calle 57, property of maternal grandfather Bartolomé Borreyro, in when March 13 1777 Don Pedro Sainz de Baranda was born. Illustrate man, marine and industrial that as Major General of Marina of Veracruz he conquered in 1825 to the last Spanish forces that were in the fortress of San Juan de Ulúa.

This was an important mansion whose portals facing directly to the square on the streets of the trade, several meters from the limit of the other constructions on the same block and of the street in general stood out, these arches were of the Moorish type, and although they were used in the XVIII century inside the houses, in corridors this was mainly, the only case that presented this characteristic. Its main entrance was down the Calle Hidalgo (today 57), since in that time no house could face directly toward the square.

Later on, between 1863 and 1961, this spaces where occupied by the hotel Cuauhtemoc where many illustrious travelers of the XIX century and early XX century lodged. To use its high plant the arches were closed with wooden and glass windows, presenting this way a new aspect. The facade was modified in 1963 when the "Portales Revolución" were built changing its Moorish arcade for arches of half point that are those that exist at the moment.

At the moment, the one that was native house of Don Pedro Sainz de Baranda, is occupied by trade and offices of diverse nature, being fractionated the part that faces to the Calle 57 in relation to the one that faces to the main square (portals).

Construction of two levels whose facade is very elaborated; among the characteristic elements we can mention its windows with small roofs and pedestals, crowned by stucco draperies; vain of access (doors) framed by jambs and lintels of figured quarry; the superior part is composed by double cornice that contains friezes adorned with geometric figures; it becomes frequent the use of columns of the Tuscany order in the interior crowned with arches of half point.

The corridor that access to the central patio is framed by a festooned arch, and in the center of this last a fountain, very frequent in the houses of that time. The whole house is communicated mainly by corridors of Moorish influence, mainly in the arches of both the first and the second level, to which you consents by a stairway of three rests. The merchants of the center in that time, they used to import marble floors and stairways.

Festooned Arch: it is the one which the hole of the vain one (space between two beams) is finished on the superior part, by a series of arches forming a combination of convex waves.

Tuscany order column: with flat, generally wide shaft and with simpler capital

Cornice: mold that crowns the facade or the top of a wall

Frieze: a bands more or less wide that usually is painted or made of another material set on the superior or inferior part of the walls.

Small roof: built roof on a window or balcony, to deviate the rain waters

Jamb: vertical element that sustain an arch or door lintel or window.

Pedestal: horizontal element inferior of the mark of a window

Ware Dora y Beatty, Betty. Diccionario Manual Ilustrado de Arquitectura Ediciones G. Gili, S.A. de C.V. México , 1990

Leal Sosa, Jaqueline. La plaza como eje rector de la vida cotidiana en Campeche. Ediciones gobierno del Estado de Campeche, 1991.

Ramos Maza, Roberto. El Estado de Campeche. México: Azabache, 1988. Pág. 38.