INAH is Mexico's National Institute of Anthropology and History, (Instituto Nacional de Antropología e Historia).
For lots of international visitors, that might mean simply, "The Anthropology Museum." That's indeed INAH's most popular destination, and one of the most important museums they run. In fact, the run quite a lot more. No fewer than 12 museums in Mexico City are INAH museums. They also administer the four most important archaological sites in Mexico City.
An institute run entirely by the Mexican federal government, it was founded on February 3, 1939 under a mandate from President Lázaro Cárdenas del Río.
Its creation has played a key role in preserving the Mexican cultural heritage. The INAH is headquartered in the Palace of the Marqués del Apartado. Its influence on this and hundreds of other valuable historical sites and properties in the country is probably incalculable.
Often together with the National Institute of Fine Arts and Literature (Instituto Nacional de Bellas Artes y Literatura - INBAL), INAH catalogs and protects buildings, archaeological sites, monuments and other artifacts considered part of the cultural heritage.