Every February more than two million people take to Rio's streets to be part of the Rio Carnival – the biggest such event in the world.

The first carnival was held in 1723. Originally it was a Roman Catholic celebration, of merry-making and eating red meat, before the somber 40 days of lent began, in the run-up to Easter Week.

Now the Carnival is a major tourist attraction.

The Carnival's parades are formed of 'samba schools', whose members are drawn from groups of Rio's neighbourhood who want to take part in the parade. But the Carnival isn't just the parade: parties, shows, beauty contests and celebrations are held across Rio for the full week of the Carnival.