Urban Climber Scales 60-Floor Tower In San Francisco In Death-Defying Stunt

Videos shot by bystanders outside of the building are breathtaking … showing the guy scaling the structure seemingly without any issues at all.

In footage shot from people inside of the skyscraper, you can see the climber was calm and cool — and even smiling — as he made his way toward the top.

Authorities in San Francisco are on the scene … and are condemning the man for the stunt.

“This person is placing firefighters’ lives and the public’s safety at risk,” S.F. Fire Dept. officials said in a statement. “AVOID THE AREA and join us in condemning this action.”

No word on who the climber is yet or if he’s facing arrest if/when he makes it down.