imagine a building in the heart of New York City with no windows towering 550 ft into the sky and rumored to be a hub for secret government operations this is 33 Thomas Street and its mystery only deepens the closer you look this brutalist structure built in the 1970s was originally designed as a telecom Hub but today some believe it's home to the nsa's secret surveillance program code named Titan Point what's really happening behind the these concrete walls engineered to withstand nuclear fallout 33 Thomas Street is a fortress it's self-sufficient with enough food water and power to last 2 weeks making it one of the most secure buildings in the world but its true purpose remains cloaked in mystery what do you think is this building just a relic of the Cold War or is something more going on inside let us know in the comments below and don't forget to subscribe for more urban Mysteries like this