Halloween. The original Celtic custom is celebrated on this day and is a popular day in the USA. Every year in New York in October, countless children are dressed in costumes and go door to door “scaring” people and yell out “trick or treat”. The major attraction on this day is New York’s Greenwich Village Halloween Parade which brings out more than two million spectators. This parade has been going on since 1973. Around 80,000 costumed participants, countless gigantic puppets and many bands ensure an unforgettable procession through the streets of New York. It is the only parade held in the US during Halloween night. This event should not be missed.