Around the world there are extraordinary building mistakes. Design teams, eyewitnesses and experts analyse what went wrong and how engineers are fixing them.
In 1973, the Aon Center became the tallest marble-clad building in the world. Years later, Chicago's extreme weather would turn its beautiful exterior into a death-trap.
In 2015, workers began to renovate the Queen Juliana Bridge in the Netherlands. But the decision to use two cranes would have devastating consequences.
In Florida, homes are swallowed whole as a giant sinkhole opens up. And in the Netherlands, why did a brand-new airport parking garage suddenly collapse?
An epic crane catastrophe wrecks a Milwaukee ballpark. A bridge in Washington State sinks like a ship, and a stadium roof collapses in Connecticut.
A bridge in Washington State plummets into a river. In the north of England, a television tower collapses. And, a building full of priceless relicts is completely destroyed.
A Chicago skyscraper hides a deadly flaw. A fuel storage depot goes up in a fiery inferno, and a championship stadium suffers a devastating collapse.
In Boston, MA, a deadly flaw brings traffic to a screeching halt. A river crossing collapses in Wales, and a dam collapse in Spain changes the course of history for...
Catastrophe strikes a major interstate in Connecticut. In Montreal an Olympic stadium turns into an epic disaster, and a huge levee fail floods a town in the Netherlands.
A revolutionary floating bridge in Washington sinks into the bottom of a lake. And, an engineering disaster in the Gulf of Mexico causes a global crisis.
In Montreal, a vital highway crossing collapses, with tragic consequences. And, an engineering catastrophe hits a legendary space mission more than 300,000km from earth.