The Tribute in Light

In what has become one of the most moving — and visible — 9/11 memorials, two giant pillars of light near where the World Trade Center’s twin towers once stood were turned on in lower Manhattan this week to mark the 16th anniversary of the Sept. 11, 2001, terrorist attacks.

Assembled on the roof of the Battery Parking Garage south of the 9/11 Memorial, the twin beams reach up to four miles into the sky and are comprised of 88 7,000-watt xenon light bulbs positioned into two 48-foot squares, echoing the shape and orientation of the Twin Towers.

On the anniversary of 9/11, the Memorial Plaza is open to the public from 3 p.m. to midnight for the viewing of Tribute in Light. The installation can also be viewed from a 60-mile radius around lower Manhattan.

Photography by Gordon Donovan/Yahoo News

Related Slideshows: 
Photos: 9/11: Then and now – 16 years later »
Photos: Remembering 9/11 on the 16th anniversary of terrorist attacks »
Interactive Photos: Iconic 9/11 images: 16 years later »

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The Tribute in Light

The Tribute in Light rises above the New York City skyline from across the East River in Brooklyn on Sept. 11, 2017, the 16th anniversary of the 2001 terrorist attacks. (Gordon Donovan/Yahoo News)

The Tribute in Light

The Tribute in Light rises above the New York skyline at the National September 11 Memorial & Museum on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

People stand and inside the art installation of The Tribute in Light on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

The Tribute in Light rises above the skyline on the roof of the Battery Parking Garage on Sept. 11, 2017, the 16th anniversary of the 2001 terrorist attacks. (Gordon Donovan/Yahoo News)

The Tribute in Light

People take photos of the Tribute in Light from Brooklyn Bridge Park on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

The Tribute in Light art installation consists of 88 searchlights that create two vertical columns of light on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

People on the street take photos with their mobile device from the rooftop of where the beams of lights are projected on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

Taken on his back using a fisheye lens, The Tribute in Light rises above the New York skyline from the National September 11 Memorial & Museum on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

The Tribute in Light rises above the New York skyline on Water Street on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

The Tribute in Light rises above the New York skyline on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

In a photo taken with a fisheye lens, the two beams of light meet in the art installation “The Tribute in Light” projecting in the night sky over Manhattan on Sept. 11, 2017. (Gordon Donovan)

The Tribute in Light

The Tribute in Light art installation consists of 88 searchlights that create two vertical columns of light on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

A woman takes a photo of the Tribute in Light with her mobile device on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

The Tribute in Light rises above the New York City skyline on the roof of the Battery Parking Garage on Sept. 11, 2017, the 16th anniversary of the 2001 terrorist attacks. (Gordon Donovan/Yahoo News)

The Tribute in Light

The Tribute in Light rises above the Trinity Church on Broadway, Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

The Tribute in Light rises above the New York City skyline from the rooftop of where the installation was projected on Sept. 11, 2017, the 16th anniversary of the 2001 terrorist attacks. (Gordon Donovan/Yahoo News)

The Tribute in Light

The Tribute in Light rises above the New York City skyline on Sept. 11, 2017, the 16th anniversary of the 2001 terrorist attacks. (Gordon Donovan/Yahoo News)

The Tribute in Light

The Tribute in Light rises above the New York skyline from the National September 11 Memorial & Museum on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

The Tribute in Light

Visitors take photos of ‘The Tribute in Light’ at the National September 11 Memorial & Museum on Sept. 11, 2017. (Gordon Donovan/Yahoo News)

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