World Trade Center 7

47-story office building in Lower Manhattan that was part of the original World Trade Center complex, constructed in 1987 and owned by developer Larry Silverstein through a ground lease with the Port Authority of New York and New Jersey. Located at 200 Greenwich Street, the building housed offices for the Central Intelligence Agency, Department of Defense, Immigration and Naturalization Service, U.S. Secret Service, and other federal agencies, as well as private tenants including Salomon Brothers and American Express Bank International.

On September 11, 2001, WTC 7 sustained damage from debris when the North Tower collapsed at 10:28 AM, igniting fires on multiple floors that burned uncontrolled for approximately seven hours due to water system failures and firefighting resource prioritization at the main collapse sites. At 5:20 PM, the building underwent progressive collapse, falling in approximately seven seconds in what appeared to be a controlled demolition-style failure that generated substantial conspiracy theories.

The National Institute of Standards and Technology conducted a six-year investigation concluding that thermal expansion from prolonged fires caused a critical structural failure at Column 79, triggering a cascade of floor collapses that brought down the entire structure. However, the collapse has remained central to 9/11 conspiracy theories, particularly due to Larry Silverstein’s controversial “pull it” comment about firefighting operations, the building’s rapid descent, and its housing of government intelligence offices.

Conspiracy theorists point to the collapse’s visual similarity to controlled demolitions, the absence of significant debris damage, and the presence of thermite traces claimed in disputed studies. Critics note the collapse occurred in broad daylight with extensive video documentation, involved no secret access required for demolition preparation, and has been thoroughly investigated by structural engineers who confirm the fire-induced failure mechanism.