May Day is a European festival that dates back nearly a thousand years.
It marks the beginning of summer and is usually celebrated at the beginning of May - halfway between the spring equinox and summer solstice.
It's thought to have been inspired by three older festivals: Beltane fires, Walpurgisnacht and Floralia.
People around the UK celebrate May Day in lots of different ways including maypole dancing, Morris dancing and crowning a May Queen.
Will you be taking part in any May Day celebrations? Let us know what you're doing in the comments below!
