The coat of arms of the state of Querétaro is a representation of a legend of the conquest of New Spain.

[1] According to some chroniclers of that time, while the Spanish were fighting a battle against the Mesoamerican indigenous people, a total solar eclipse took place.

In the lower left field, there is an image of the apostle, dressed in military clothing and mounted on a white horse.

[2] Later, the shield (as a crest) and the flag of Mexico were added, as a symbol of the integration of Querétaro into the Mexican federation.

At the bottom of the shield, war symbols were added, such as cannons and bullets, and bundles of arrows, which recall the importance of Querétaro in the military history of Mexico, especially in the resistance against the Second Mexican Empire.