Immerse Yourself into Belize’s Vibrant and Colorful Cultural Festivals. Did you know that Belize is home to the largest Mayan festival? Held every August, the festival is called the Costa Maya Festival and it gathers Mayans from across Central America to celebrate its traditional ceremonies, dances, music and mouth-watering culinary delights! BUT that is just ONE of the many festivals Belize takes so much pride in hosting every year.