See some of the world's biggest building blunders up close and personal. Find out how each structure failed, the basic building block that was missed during construction, and what engineers learned from their mistakes.

See some of the world's fastest transportation breakdowns at lightning speed. Find out how each form of transportation failed, the basic engineering missed during construction, and what engineers learned from their mistakes.

See some of the world's fastest transportation breakdowns at lightning speed. Find out how each form of transportation failed, the basic engineering missed during construction, and what engineers learned from their mistakes.