"Let the Great World Spin" by Colum McCann
Here's an excerpt from the Amazon review:
Colum McCann has worked some exquisite magic with
Let the Great World Spin, conjuring a novel of electromagnetic force that defies gravity. It's August of 1974, a summer "hot and serious and full of death and betrayal," and Watergate and the Vietnam War make the world feel precarious. A stunned hush pauses the cacophonous universe of New York City as a man on a cable walks (repeatedly) between World Trade Center towers. This extraordinary, real-life feat by French funambulist
Philippe Petit becomes the touchstone for stories that briefly submerge you in ten varied and intense lives--a street priest, heroin-addicted hookers, mothers mourning sons lost in war, young artists, a Park Avenue judge. All their lives are ordinary and unforgettable, overlapping at the edges, occasionally converging. And when they coalesce in the final pages, the moment hums with such grace that its memory might tighten your throat weeks later.