Alex Honnold says he needed to know if scaling the Taipei 101 was even possible before he did Netflix’s "Skyscraper Live" special, so he turned to a more traditional way of climbing to find out.

I kind of lost track of space and time,” the American told NBC News' "TODAY" after he climbed the famous skyscraper.

Famed rock climber Alex Honnold has described some of the things that may work against him in his attempt to free climb one ...

“Free Solo” star Alex Honnold expects to ascend the Taipei 101 tower in less than 2½ hours.

Free solo climber Alex Honnold discusses the message he hopes viewers take away from Netflix's “Skyscraper Live" and his film ...

American rock climber Alex Honnold summited the Taipei 101 skyscraper — with no ropes or safety net — in an event broadcast live. • New heights: The 1,667-foot Taipei 101 is one of the tallest ...

American rock climber Alex Honnold has ascended the Taipei 101 skyscraper without any ropes or protective equipment.

World-renowned free climber Alex Honnold, 40, began scaling Taipei 101 shortly after 9 a.m. local time Sunday. Clear skies ...

The earthquake-proof skyscraper of steel and glass has captured the imagination of professional rock climber Alex Honnold for ...

American rock climber Alex Honnold ascended the Taipei 101 skyscraper on Sunday without any ropes or protective equipment.

Honnold is familiar with the challenges of free-soloing, having climbed Yosemite’s 3,000-foot El Capitan among other feats, ...