The New York Skyscraper Built to Withstand a Nuclear Attack – Unofficially known as the AT&T Long Lines Building, located at 33 Thomas Street, NYC.
source.image(PrtSc): Wonder World
From 1974 to 1999, it served as a gargantuan telephone switchboard for AT&T’s long distance service. In its prime, it used to direct around 175 million calls per day.Watch the video from Wonder World:
The building looks like a fortress, because it was built like one. It was constructed in 1974, during the cold war period and was designed to withstand a nuclear blast, and protect the occupants from nuclear fallout.
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The building is an example of the Brutalist architectural style. It is a telephone exchange or wire center building which contained three major 4ESS switches used for interexchange (long distance) telephony, as well as a number of other switches used for competitive local exchange carrier services
