Since the public opening on April 4, 1973, New York's iconic Twin Towers remained a symbol of the city up until the tragic September 11 attacks. Take a look back at the iconic structures ...

The Twin Towers became a landmark, helping people orient themselves in the city. ... They showed up in pictures of public housing projects, elevated subway stations, even ferry boats.

Camilo José Vergara View of a passing banana boat and the Twin Towers from Red Hook, Brooklyn, 1978. Camilo José Vergara View from Exchange Place, Jersey City, New Jersey, 1978.

Donald Trump said Monday that he witnessed people jumping out of the Twin Towers on 9/11 from the view in his apartment. “Many people jumped and I witnessed it, I watched that. I have a view ...

September 11, 2001, went from a normal day to one of the darkest in American history when four commercial planes were hijacked by terrorists. Many trapped in the towers made calls through the morning.

Shortly after 7 a.m. on Aug. 7, 1974, French performance artist Philippe Petit stepped out from the roof of the World Trade Center’s South Tower and onto a one-inch thick cable, stretching 140 ...

Between the twin towers were all these bits of metal or paper that were catching light, it looked like phosphorescence. Katherine Hardy was staying at the Millenium Hilton New York on September 11.

The World Trade Center's twin towers, hit on Sept. 11 by separate airplanes, were weakened by impact and fire, but they fell in different ways, according to investigators. On Tuesday at 8, PBS's ...