Christmas lights are a popular decoration during the holiday season. They add a cheerful and festive atmosphere to homes, businesses, and public spaces. The lights come in a variety of colors and designs, and they can be strung up in trees, around windows, or along rooftops. The tradition of decorating with lights dates back to the mid-19th century when strings of lights were first created using small candles and gas lamps. Over time, the lights evolved into the electrical versions we know today. Some people believe the lights are a symbol of hope and joy during the dark winter months.