Rio Carnival (Brazil)

Rio Carnival draws 2 million daily revelers to the Sambadrome for the world’s largest carnival, a five-day explosion of samba school parades and elaborate costumes. Attendance exceeds Diwali’s typical street celebrations by nearly 500,000 per day, while the event generates over $1.2 billion in tourism revenue. The parade features 12 top-tier samba schools competing with 4,000-plus participants each, judged on rhythm, costume, and choreography. This scale and economic impact outperform #2 Diwali in total visitor spending.