Christmas trees have been around for centuries, and their origins can be traced back to pagan traditions. The first recorded use of a Christmas tree was in Germany in the 16th century, where it was known as a "paradise tree." The tradition of decorating a tree with lights and ornaments was introduced in the 19th century by German immigrants to the United States. Today, Christmas trees are a beloved tradition around the world, and they symbolize the joy and magic of the holiday season.