We loved knowing we were standing on the final resting place of 16 royals, and that from the top of the South Tower we could actually see the Vienna Woods.

FORBES: Travel

Disagreeing with his group's decision to retreat upstairs -- only DiFrancesco survived, and only then after running down from the 91st floor and getting out right before the South Tower fell -- Clark returned to Stairwell A. Shoulder to shoulder with Praimnath, the pair began the dangerous descent down the wet stairway.

CNN: An improbable escape

From my office on the 17th floor I could see the South Tower and, beyond it, New Jersey, where I lived.

FORBES: 9/11 Stories: 'No One Talks About That'

And as she headed back toward her apartment, four blocks from what was soon to be known as ground zero, the south tower collapsed, sending a plume of debris into the air and straight down her street.

CNN: The story