Learn about the origins, meaning and customs of Halloween, a holiday celebrated on October 31. Find out how Halloween evolved from the ancient Celtic festival of Samhain to a day of costumes, treats and tricks in America.

Halloween is a holiday on October 31 that marks the beginning of Allhallowtide, a season of remembering the dead. It has roots in the Celtic festival of Samhain and the Christian feasts of All Saints and All Souls.

Learn how Halloween evolved from ancient Celtic and Christian festivals, and why we celebrate it with costumes, trick-or-treating and jack-o'-lanterns. Find out the origin of the word "Halloween" and the legend of "Stingy Jack".

Learn how Halloween evolved from the ancient Celtic festival of Samhain to a secular holiday with global influence. Discover the history of costumes, jack-o'-lanterns, trick-or-treating, and more.

Learn how Halloween evolved from a Celtic festival of the dead to a secular holiday of costumes and candy. Discover the origins of trick-or-treating, All Saints Day and more.

Learn how Halloween evolved from ancient Celtic rituals to a modern American tradition, with costumes, candy and haunted houses. Explore the origins of trick-or-treating, jack-o-lanterns, All Saints' Day and more.

Halloween is a day of costumes, parties and trick-or-treating that evolved from the ancient Celtic festival of Samhain. Learn about the origins, customs and global variations of this popular holiday on HISTORY.

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 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.