The National Flag´s Sanctuary was a Project to shelter a site museum in the City of Iguala, commemorating two important events in the history of Mexico; The first National Independence essay written by Agustín de Iturbide and the confection of the first Mexico´s flag by a local tailor known as the three guarantee flag, that set place in a 17 century military building, enclosed by a beginning of the last century aisle construction. The design and construction work started in 1997; concentrating the design in the courtyard, which was updated and re-structured with white poured in site concrete blank walls, the same exposed white concrete was used to replace the old ceilings. The ancient construction; a 3 ½ feet wide stone wall cube space, which used to be a prison for guerrilla fighters in the so called dirty war; was restored leaving exposed the stone work. At one side a 100 feet free suspended concrete wall covers the open stage set to host regional dance performances and in the rear besides the stone wall a small closed auditorium is found. In the center of the courtyard a great guamuchil tree dominates the whole site and remains set as an entrance closing view. Additionally natural un-painted steel angles and flat sheets were used as roof covering for the courtyard main access. The works were interrupted by budget unforeseen difficulties.