Many have walked by and wondered what purpose this vast, windowless skyscraper in the heart of Manhattan serves. 33 Thomas Street, also known as the "Long Lines Building" (LLB), is an impenetrable monolithic fortress amid canyons of glass and steel. Ostensibly an AT&T telecoms building, the New York Times have recently reported (based on investigative work by The Intercept) that this "blank face[d] monument to privacy" may in fact be a NSA (National Security Agency) listening post, hidden in plain sight.

Many have walked by and wondered what purpose this vast, windowless skyscraper in the heart of Manhattan serves. 33 Thomas Street, also known as the "Long Lines Building" (LLB), is an impenetrable monolithic fortress amid canyons of glass and steel. Ostensibly an AT&T telecoms building, the New York Times have recently reported (based on investigative work by The Intercept) that this "blank face[d] monument to privacy" may in fact be a NSA (National Security Agency) listening post, hidden in plain sight.Designed by San Franciscan John Carl Warnecke?an architect who worked closely with the Kennedy administration, and designer of the late President's mausoleum?the Brutalist tower was completed in 1974. Built to withstand a nuclear attack on New York or, at the very least, a devastating loss of power to the city, the 550 foot-tall (169 meters) structure is supported by systems that allow it to provide enough food, ...