The Tribute in Light, which honors the 9/11 dead and evokes the lost Twin Towers, was turned on last night in an apparent test run, several days before the seventh anniversary of the World Trade Center attack. This was the view from Eighth Avenue at 22nd Street in Chelsea, around 9:30 p.m. Monday.

It's impossible to overstate how comforting the sight of these lights was when they were first activated on March 11, 2002, on the sixth-month anniversary of the attack. We had the privilege of attending the inaugural ceremony, and it was an unforgettable, moving experience.

The lights on the 11th will be turned on at sunset, and will fade into the sunrise the next morning. They will shine from a lot at West and Morris streets, but will be visible for up to 30 miles away.

-See photos of the first Tribute in Lights, from 2002

-Here are photos of steel beams, crushed fire trucks and other WTC relics

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-And here are photos of Tribute WTC, the temporary museum next to Ground Zero

-- Rolando Pujol