The tradition of the Christmas tree originated in Germany over 400 years ago. It was originally a pagan tradition that symbolized the rebirth of the sun after the winter solstice, but it was later adapted into a Christian tradition. Germans decorated their trees with candles to represent the light of Christ, and over time, this tradition spread to other countries. Today, the Christmas tree is a popular symbol of the holiday season, and it is often decorated with lights, ornaments, and other festive items.