Over 1.5 billion pounds of pumpkins are produced each year for Halloween.
Halloween began as the Celtic festival of Samhain, marking the end of harvest.
Costumes were originally worn to ward off ghosts in ancient times.
Trick-or-treating has medieval roots in begging for food.
Haunted attractions in the U.S. contribute to a billion-dollar industry.
Fall is prime apple-picking season, boosting cider mills' popularity.
Thanksgiving started as a harvest festival with feasting.
Americans spend over $10 billion on Halloween costumes and decorations annually.
Ghost tours are popular for exploring local legends and hauntings in fall.