The world's strangest secret building is fortified in Manhattan, New York. Its mystery continues to baffle everyone who tries to delve into its corridors and underground passages. No one knows what's inside it. It's known only as a building pulsating with intelligence and secret mining activities. From within its solid walls, it intercepts communications of a billion people around the world and tracks the movement of hundreds of millions of people using mobile phones and the internet through 'cyber-attacks' executed by this building.

The building houses the National Security Agency (NSA), an intelligence agency of the United States government, responsible for monitoring, collecting, and processing information and data for counterintelligence purposes, a field known as signals intelligence.

In terms of design, it is a massive concrete building without any windows, containing only ventilation openings. There are rumors that it is inhabited by strange 'things' and 'spirits.'

This building has terrified many to the extent that the famous actor Tom Hanks described it as the most frightening building in the world. It is a brown-colored skyscraper without windows or glass facades, designed to withstand nuclear attacks.

This building belongs to the telecommunications company AT&T and serves as a secret headquarters for the NSA, which has its own exits on the south side of New York Route 295, exclusively for employees. These exits can only be used by those with appropriate clearances, and there are security vehicles parked along the road to guard these exits."