The origin of the holiday comes from the night before the Christian day, All Saints' Day or All Hallows' Day. This is a day to commemorate the saints of the church, those who are known and those who are not known. The name Halloween derives from All Hallow's Eve (the night before All Hallow's Day), which in Scottish eve is even, and is often contracted to e'en or ‘een'. The reason for the ghouls and the skeletons is because this is the final night they have before they're scared away by the saints.
It's a great tradition for young children to get out and about and meet new people, greet neighbors and learning about dealing with strangers.
Despite Halloween only being one day a year, there is a huge market and the sheer numbers are staggering. With the holiday being celebrated internationally and an impressively high uptake, a significant amount of money is spent for Halloween and plenty of time is used carving pumpkins, decorating houses.
Find out where the focus is in today's infographic.