Every Christmas for more than 30 years, someone has decorated this 20-foot juniper tree in the median of Interstate 17 about 55 miles north of downtown Phoenix, Arizona.

The decorations, the same ones every year, go up before Thanksgiving, and they’re taken down after New Year’s Day.

“I know who started it, but I’m not going to go into that,” former transportation department employee Tom Foster told the Arizona Daily Courier in 2009. “I heard there’s some elves that got to looking at how bleak we were … and people weren’t celebrating Christmas very well. They thought [the decorations] are a good way to brighten the drive between here and Phoenix.”

“But don’t stop on the road. That’s not what Santa wants.”