Hello,
The Carnival in Rio de Janeiro is considered the world's most famous festival. This festival consists of parades, outdoor performances and the most important: music and dancing. About 2 million people per day are on the street celebrating this and it is held every year. This festival happens every February or March and ends 40 days before Easter. During the carnival, they wear a lot of colorful and fun costumes, which brings the attention.
I hope it helps and do not hesitate to ask me some other questions
