The tradition of decorating Christmas trees dates back to the early 1500s, when German families began bringing evergreen trees into their homes and decorating them with candles, ornaments, and sweets. This custom was inspired by the pagan tradition of bringing evergreen boughs into the home during the winter solstice to symbolize the return of light and the renewal of life. The custom of decorating Christmas trees eventually spread to other parts of Europe, and eventually to the United States, where it became a popular holiday tradition.