Megyn Kelly

Much of the country remains in winter storm and ice warnings, with officials stressing the importance of checking local forecasts and advisories.

Rock climber Alex Honnold, who famously climbed the 3,000-foot El Capitan rock face in Yosemite National Park without ropes, making history again, successfully summiting one of the world's tallest buildings without any safety equipment.

Honnold taking on Taipei 101, the iconic 1,667-foot-tall building in Taiwan.

Though the skyscraper is significantly shorter than El Capitan, the challenge presenting unique risks.

Glass and steel offering less friction than a rock face, making slipping far more likely.

Honnold beginning the climb early Sunday morning local time.

The event broadcast live on Netflix with a 10-second delay in the event of tragedy.

Hundreds gathering on the ground and inside the building, which houses retail and office space, to witness the ascent.

Wearing a bright red shirt and armed only with a chalk bag and climbing shoes, Honnold beginning his climb, his wife, Sonny McCandless, in attendance.

Their two children, three-year-old June and 23-month-old Alice, not present.

As he climbed higher, the increasing wind becoming more visible, whipping his shirt and tossing his hair.

Several times during the ascent, Honnold pausing on narrow ledges to wipe his shoes and hands clean of the building's greasy residue.

44 minutes into the climb, Honnold passing the 60th floor.

where wife Sonny watches from inside.

With a wide smile and a nervous giggle, she flashes a thumbs up.

Alex smiles and continues upward.

Reaching the final stage, the tower, Honnold makes a few final moves, then hoists himself onto the very top.

His reaction moments later.

Hanul taking a selfie at the top and waving to the crowd below before unraveling a rope to rappel down to a staging area.

The world and his wife breathing a sigh of relief.