A major Christmas mystery is unfolding in Montreal, Canada, as some unknown artists have just scaled a 142-foot tall abandoned factory to decorate it for the holidays for the second year in a row.

“Kudos to the perpetrators of this dastardly and very dangerous deed, they did it again!” Gabriel Jacob wrote in a post on the Montreal Then and Now Facebook group. “They put up a new Christmas tree on top of the abandoned Canada Malting Company plant.”

“They upped their game this year and also put Christmas decorations on one of the windows and left a giant nicely gift wrapped gift,” he added. “They even put a name tag on the gift. I can’t make out the name tag, I am assuming it is made out to all the citizens of Montreal!”

Last year, citizens of Montreal were stunned when a Christmas tree appeared on the roof of the factory for the very first time. The abandoned factory tower is notorious for being dangerous to traverse, yet someone managed to get a Christmas tree all the way to the top of it.

The mysterious daredevil artists took things even further this year, when they placed a large present on the roof of the factory alongside a new Christmas tree. They also went to the trouble of putting decorations in the factory’s windows!

Montrealers were stunned in the fall of 2019, when pink paint mysteriously appeared one day on the house at the top of the factory.

While these unknown artists’ Christmas endeavors are undoubtedly bringing people joy, the building’s owner Steven Quon warned that what they are doing is extremely dangerous.

“Let me tell you, the people who did this, they’re crazy,” Quon warned in an interview. “I’ve been up there before. The last 40 feet is with a ladder, outside, and it’s high. Even working up there is not easy.”

Built in 1904, the factory has been abandoned since 1989, and the owner said that there has been no electricity on the premise since then. That’s why he believes whoever did this climbed up with a generator to set up the Christmas lights.

“We found six ladders of 40-50 feet… That’s expensive. I don’t know if they steal them from construction sites,” Quon said. “Their ladders’ worth a couple of hundred bucks.”