Halloween, also known as All Hallows' Eve, is a holiday celebrated on October 31st every year. The origins of Halloween can be traced back to the ancient Celtic festival of Samhain, which was celebrated in what is now Ireland, the United Kingdom, and parts of France.

During Samhain, people would light bonfires and wear costumes to ward off ghosts. It was believed that on this night, the boundary between the living and the dead was blurred, and spirits could easily cross over into the world of the living.

Over time, the Christian church adopted many of the traditions of Samhain and transformed it into All Hallows' Eve, the night before All Saints' Day. In many cultures, Halloween has become a time for trick-or-treating, costume parties, and spooky decorations.

Today, Halloween is a widely celebrated holiday in many countries around the world. While its origins are rooted in ancient Celtic traditions, it has evolved into a fun and festive occasion for people of all ages to enjoy.