Mexico City is celebrating 700 years since its founding with public events on Saturday, highlighting its Indigenous roots.

Aztec priests at Tenochtitlán offered a whole galaxy of starfish to the war god Huitzilopochtli 700 years ago, along with a trove of other objects from the distant edges of the Aztec Empire.

3. The first king of Tenochtitlán was Acamapichtli. He founded the Aztec Empire which was one of the most powerful pre-colonial American civilizations. 2. The Mexican flag depicts an Aztec myth.