11:45 AM PT -- The daredevil has been ID'ed as Maison Des Champs -- a rock climber who calls himself the "Pro-Life Spider-Man."
On his personal website, he says he's transitioned to climbing skyscrapers in an effort to end abortion.
The climber posted videos to his social media page mid-ascent on Tuesday, and said the climb was "not that hard."
No word on if he's been officially arrested -- we've reached out to cops for comment, but have not received a response yet.
11:27 AM PT -- S.F. Fire Department officials say the climber is now off the structure and currently with police.
Unreal scene in San Francisco on Tuesday morning ... a daredevil is climbing up the city's tallest skyscraper -- with no ropes or safety nets.
The urban climber began his ascent on the Salesforce Tower in the middle of downtown S.F. shortly after sunrise -- and as of this posting, he's nearly made it to the top of the 60-floor, 1,070-foot tall building.
Walking to get coffee in San Francisco and this dude is just climbing a building pic.twitter.com/aTzeXLVBa8
— Trent (@BarstoolTrent) May 3, 2022
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.
My man #freeclimbing #salesforcetower on a Tuesday pic.twitter.com/MwrYhWpqAY
— Kristopher (@k_j_floyd) May 3, 2022
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.
Originally Published -- 11:16 AM PT