The tradition of the Christmas tree dates back to ancient times. The practice of decorating evergreen trees can be traced back to pre-Christian Europe, where the people would cut down trees and bring them indoors to celebrate the winter solstice. As the years went by, the tradition evolved into a celebration of the birth of Jesus Christ and became known as the Christmas tree. In the 16th century, Martin Luther, a Protestant reformer, introduced the custom of decorating the tree with candles, which became a popular part of the Christmas tree tradition. Today, the Christmas tree is an iconic symbol of the holiday season.