When the days grow short and the evenings arrive before dinner, something magical happens across neighborhoods everywhere: the lights come out. String lights, candles, glowing wreaths, inflatable snowmen illuminated from within — the whole season seems to sparkle. But why?

A tradition older than Christmas
Long before Edison, LEDs, or Clark Griswold’s famous roof display, people used light to celebrate the winter solstice — the darkest time of the year. In many ancient cultures, lighting fires, candles, and lanterns in December symbolized hope, protection, and the promise that longer days would return.

Candles on the tree
By the 1600s in Germany, families began decorating evergreen trees with candles to symbolize warmth and life in winter. It was beautiful… and extremely dangerous. Buckets of sand or water would sit nearby in case the tree caught fire — which it often did!

Enter electricity
In 1882, Edward H. Johnson, an associate of Thomas Edison, hand-wired 80 red, white, and blue bulbs and hung them on his Christmas tree. Curious crowds gathered outside his New York home to stare through the windows. Slowly, electric tree lights spread — though early versions were expensive and required hiring an electrician to install.

From bubble lights to LEDs
The 20th century brought a parade of styles: C7 and C9 bulbs, bubble lights (which still have a cult following), icicle lights, and today’s long-lasting, energy-efficient LEDs. Modern lights are safer, cooler to the touch, and available in every shape from snowflakes to synchronized musical displays.

Why we still do it
Holiday lights create a sense of warmth when the world feels cold. They brighten neighborhoods, lift moods, and remind us of childhood excitement. Psychologists even say lights can improve mental well-being during the darkest months by triggering feelings of nostalgia and comfort.

In a season that often feels busy and commercial, lights give us a simple, shared joy. Whether you prefer classic white strands, whimsical rainbow patterns, or the neighbor’s house that goes full Clark Griswold every year, those glowing decorations connect us — to history, to tradition, and to each other.