02. Rio de Janeiro, Brazil
If Rio is best known for its Carnival festivities, its New Year’s Eve celebration comes in a close second. Iconic Copacabana Beach Hosts the world’s largest (and arguably wildest) New Year’s Eve party, in which more than two million people cram onto the two-and-a-half-mile stretch of sand. Known as Réveillon, this uniquely Brazilian celebration that blends religious, traditional, and superstitious beliefs. The celebration also includes large oceanfront stages for live musical and dance performances, and a colorful fireworks display at midnight completes the scene.