33 Thomas Street, a windowless skyscraper in Lower Manhattan, was built in 1974 as a secure telecommunications hub. Over time, it became linked to NSA surveillance, with leaks suggesting it intercepted international communications.

Known as the “Long Lines Building,” it houses equipment used to monitor data from organizations like the UN and IMF. Despite its mysterious role, the full extent of its involvement in surveillance remains unclear, highlighting the ongoing debate between privacy and national security.