Taipei is not as tall as El Capitan, the granite wall in Yosemite National Park that Honnold climbed ropeless, in 2017, making international headlines, but it would be the tallest building any human has ever scaled without safety gear. (Alain Robert, nicknamed the French Spiderman, ascended a taller building, Dubai’s Burj Khalifa, in 2011, but organizers demanded that he wear a harness affixed to a rope and Robert obliged.)