Final answer:
The world's largest Cinco de Mayo celebration is held in Los Angeles, California, noteworthy for its grand parade and extensive festivities, surpassing even those in Mexico.
Step-by-step explanation:
The world's largest Cinco de Mayo celebration does not actually occur in Mexico, as one might expect, but rather in the United States. Among the most famous celebrations is the festival that takes place in Los Angeles, California. This festival draws vast crowds and is well-known for its grand parade, cultural exhibitions, live music, and plenty of traditional Mexican food. While cities in Mexico like Puebla, where the historical battle that Cinco de Mayo commemorates took place, host festivities, the scale and international recognition of Los Angeles' celebration make it particularly noteworthy.