During the heyday of Tenochtitlan, the area now occupied by the National Palace, seat of the Federal Executive Power, and extending to the current building of the Supreme Court of Justice of the Nation, was home to the New Houses of the tlatoani Moctezuma Xocoyotzin. It was a majestic place with temples, warehouses, courtyards, offices, kitchens, bedrooms, bathrooms, a freshwater fountain from Chapultepec, and several doors leading to the public square and surrounding streets.

After the conquest, Hernán Cortés took ownership of this property along with others nearby. Upon his death, his heirs sold the property to the Spanish Crown in 1562 to be used as the viceroy's palace and seat of the Audiencia of New Spain.

After Mexico's declaration of independence in 1821, this building was transformed into the National Palace. Thus, from Tenochtitlan to the present day, this space has housed the political and economic power of the country, hence the importance of the remains displayed in the seven archaeological windows that visitors can see.

Inside the Francisco I. Madero Historical Fund, there is an archaeological window measuring 3.50 m long by 1.60 m wide, which was excavated by the Urban Archaeology Program between 2003 and 2004. In it, you can see the remains of a staircase with a handrail that connects an open plaza with a Mexica temple from north to south. Although there is little information about this building, it is known to be located within what was once the sacred precinct of Tenochtitlan and is probably related to the complex dedicated to Tezcatlipoca.

Source: Raúl Barrera Rodríguez, director of the Urban Archaeology Program