From a 600-meter walking stick rotting over Tianjin to North Korea's Hotel of Doom with no elevators, these are the world's most catastrophic skyscraper failures. Billions spent, zero occupants, and ...

Explore the most insane megaprojects that were never built, including the dream airport above New York, the most iconic hotel in the world, the mile-high Illinois skyscraper, America's tallest failed ...