Learn about the origins and evolution of Halloween, a celebration observed in many countries on 31 October. Explore the Christian, Celtic and other influences on its customs, such as trick-or-treating, costumes, jack-o'-lanterns and more.

Learn how Halloween evolved from ancient Celtic rituals to a global secular holiday. Discover the origins of costumes, bonfires, jack-o'-lanterns, and All Hallows' Eve.

Learn about the ancient Celtic festival of Samhain and how it evolved into the modern secular celebration of Halloween. Discover the traditions, symbols, and customs of this holiday around the world.

Learn how Halloween evolved from ancient Celtic rituals to a modern American tradition, with influences from Christianity, myth and consumerism. Explore the origins of trick-or-treating, jack-o-lanterns, costumes and more.

Below, explore the history behind Halloween, from its ancient roots to the origins of a much-loved modern phenomenon, the pumpkin spice latte. When did we start celebrating Halloween? A group of people gathering for All Hallows' Eve in Scotland.

Learn how Halloween evolved from the ancient Celtic festival of Samhain to a modern celebration of costumes, candy, and pranks. Discover the origins of carving pumpkins, seeing ghosts, trick-or-treating, and more with historical sources and illustrations.

Learn how Halloween evolved from the ancient Celtic holiday of Samhain to a global celebration of costumes, candy and superstitions. Explore the history, folklore and customs of Halloween around the world with videos, stories and timelines.

Learn how Halloween evolved from the ancient Celtic festival of Samhain, when people honoured their ancestors and feared evil spirits, to a Christian celebration of All Saints Day. Discover the Roman and pagan elements that shaped the traditions of costumes, bonfires, apples and more.