The Skyscraper That Almost Collapsed (And Nobody Knew)

In 1978, one of New York City's most ambitious skyscrapers was already finished, occupied, and towering over Manhattan. Then an engineer discovered something that changed everything. The Citicorp Center — now known as 601 Lexington Avenue — had an unusual structural design that allowed the massive tower to rise above St. Peter's Lutheran Church. But after the building opened, new calculations raised a terrifying question about how the structure could respond under extreme conditions. What followed was an extraordinary engineering operation carried out largely out of public view. While thousands of people continued working inside the building and New York moved normally through the streets below, engineers raced to strengthen critical structural connections — as hurricane season approached. In this TITANFOLD documentary, we explore the engineering behind Citicorp Center, the hidden structural problem discovered after construction, the emergency repairs, Hurricane Ella, and why this case became one of the most remarkable stories in structural engineering. Some engineering stories are about structures that collapsed. This one is about a skyscraper that never did. Subscribe to TITANFOLD for documentaries about megaprojects, impossible engineering, hidden structural problems, infrastructure failures, and the extraordinary systems humans build to push beyond the limits. TITANFOLD Engineering Beyond Limits. #Engineering #Megaprojects #Skyscraper #NewYork #CiticorpCenter