American climber Alex Honnold has successfully scaled a Taiwan skyscraper without a rope, harness, or safety equipment.
The building, named Taipei 101 for the number of its floors, is 508m (1,667ft) tall and designed to resemble a stick of bamboo.
Honnold is renowned for being the first person to climb El Capitan without ropes or safety gear. The 915m (3,000 foot) granite cliff is in California's Yosemite National Park.
The climb was originally set to take place on Saturday but was delayed by wet weather. His ascent in Taiwan's capital was streamed live on Netflix, which raised concerns for viewers in case of an emergency.
We'll cut away, Netflix executive Jeff Gaspin told Variety magazine before the event. Nobody expects or wants to see anything like that to happen.
Honnold completed the Taipei 101 climb in one hour and 31 minutes, celebrating his achievement with a single word: Sick. His time is more than half that of the only other person to scale the tower.
Alain Robert, a French climber known as Spiderman, previously climbed Taipei 101 using ropes and a harness, taking four hours to reach the top.
After his climb, Taiwan's Vice-President Hsiao Bi-khim congratulated Honnold on social media, admitting to feeling nervous watching him tackle the height.
Honnold was greeted at the top of the building by his wife, who expressed concerns over the wind and heat. Surprisingly, fans cheered him on from the 89th floor, making the challenge even more exhilarating.
Honnold has made numerous extreme climbs throughout his career, with his ascent of El Capitan featured in the award-winning documentary Free Solo.
