With an estimated 3.5 million bulbs glowing along the harbor in Duluth, the Bentleyville Tour of Lights had already billed itself as "America's largest free walk-through lighting display."
But it's about to get even bigger.
This year's display, which opens Saturday, will shine with a million more lights than last year — 4.5 million total.
It's come a long way from where it started in a local business owner's yard in 2001. Creator Nathan Bentley is continuing to plan and organize the ever-expanding display, he said, mostly for the enjoyment of the kids who come to see it.
"There's a lot of stress getting it open every year," Bentley said. "Once it's open, then it makes it worth its while. People come through and they talk about how amazing it is."
This year, the tour's 128-foot centerpiece "tree" will have 150,000 LED lights, up from 100,000 a year ago. Instead of glowing blue and white, as it has for the past few years, the tree will light up in red and green.
Visitors will also walk through more lighted tunnels and see new Duluth-themed displays and an expanded display thanking the country's military troops. A chance to visit Santa will now come at the end of the walk-through display instead of in the middle.
Volunteers will still serve free cocoa, cookies, popcorn and marshmallows for roasting over one of the display's many fire pits. Children 10 and under will still get a free knit hat.