33 Thomas Street

Architect
John Carl Warnecke
Style
Brutalism
City
Manhattan, NY
33 Thomas Street
Photo: Marcin Wichary from San Francisco, U.S.A., CC BY 2.0
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33 Thomas Street, also known as the AT&T Long Lines Building, is a 550-foot windowless skyscraper in Tribeca designed by John Carl Warnecke in the Brutalist style. Built between 1969 and 1974, it was constructed as a telephone exchange for AT&T's Long Lines Department, housing solid-state switching equipment including three major 4ESS switches for long-distance calling.

the building

Windowless massing. The tower has no windows at all, a Brutalist expression of its function as a fortified switching facility rather than an office building. The site previously held cast-iron buildings whose facades were removed for preservation before demolition.

the style

The Brutalist style here was suited to the building's purpose: a windowless concrete mass built for tight security around sensitive switching equipment.

More on Brutalism

the architect

John Carl Warnecke designed 33 Thomas Street as a telephone exchange building, completed in 1974.

significance

The building has been reported to serve as a National Security Agency mass surveillance facility.

nearby

All 413 buildings in Manhattan