A New York City skyscraper that could topple at any moment; a city street that suddenly collapses; a modern-day crisis at Pisa's Leaning Tower; experts use cutting-edge technology to reveal if they can be fixed.

A skyscraper sinking into the earth, the world's strongest wall in crisis, and a deadly bridge are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal what went wrong and if they can be fixed.

A railroad bridge on the edge of disaster, a nightmare in a fairy-tale town, and a massive cathedral in calamity are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal if they can be fixed.

A skyscraper causing hellish heat in downtown Dallas, a swarm of sinkholes, and a landmark with a fatal secret are engineering catastrophes in need of repair, and experts use cutting-edge technology to reveal what went wrong and if they can be fixed.

When America's tallest dam threatens to burst, a nearby town finds itself an hour away from total annihilation, and engineers use cutting-edge technology to reveal what went wrong and if disaster can be averted.

A fire in an American town that has been burning since 1962; a massive flood threatens Chicago's iconic skyscrapers; a town swallowed by the sea; experts use cutting-edge technology to reveal what went wrong and if they can be fixed.

An abandoned Vegas-style getaway with a deadly secret, a ghost town sinking into the earth, and a passenger train on course for disaster are engineering catastrophes in need of repair and experts use cutting-edge technology to reveal what went wrong.

A skyscraper rained deadly bolts on the streets below, a highway on the brink of collapse, and a catastrophic landslide are engineering crises in need of repair. Experts use the latest science to reveal what went wrong and if disaster can be averted.

When catastrophe strikes Skylab, life on earth is threatened by a space station cratering toward earth, and NASA experts use cutting-edge technology to reveal what went wrong and if disaster can be averted.

A detonated building mysteriously refuses to fall, an American ghost town with a deadly legacy, and wind turbines on the brink of disaster are engineering disasters in need of repair, and experts reveal what went wrong and if they can be fixed.

When demolitions don't go as planned, engineers race for cutting-edge solutions to bring down the buildings that refuse to fall, and at work sites in Las Vegas & Russia, experts see if they can succeed where the world's most powerful explosives fail.

When demolitions don't go as planned, engineers race for cutting-edge solutions to bring down buildings that refuse to fall. At the world-renowned Pontiac Silverdome in Michigan, experts try to succeed when the world's most powerful explosives fail.