33 Thomas Street, also known as the AT&T Long Lines Building, is a windowless telecommunications hub in New York City that has become synonymous with surveillance and conspiracy theories. The building’s design, characterized by its brutalist and fortress-like appearance, was driven by the need for functionality, including protection from nuclear blasts, ventilation, and cooling. Over the years, the building has housed various entities, including a Verizon data center and the National Security Administration (NSA). It has been the subject of much speculation and has appeared in popular culture, serving as a symbol of the unaccountable state-and-corporate surveillance apparatus.
https://placesjournal.org/article/33-thomas-street-and-conspiracy-thrillers/