In this picture of from 1971, the nearly completed World Trade Center twin towers are shown. On the 11th anniversary of the Sept. 11 terror attacks, LIFE.com pays tribute to New York City in photos showcasing lower Manhattan, where the twin towers once stood.
(Photo: Henry Groskinsky—Time & Life Pictures/Getty Images) High-res

In this picture of from 1971, the nearly completed World Trade Center twin towers are shown. On the 11th anniversary of the Sept. 11 terror attacks, LIFE.com pays tribute to New York City in photos showcasing lower Manhattan, where the twin towers once stood.

(Photo: Henry Groskinsky—Time & Life Pictures/Getty Images)