Bird’s eye view of WTC spire being positioned

(Photo: Port Authority of NY & NJ)

The Port Authority of NY & NJ has released a video of the view from the One World Trade Center spire as it was being placed atop of the building making it the tallest in the western hemisphere.

Watch the full video.

World Trade Center becomes tallest US building at 1776 feet

(Photos: NBC News)

A crane lifted the last of a 408-foot tall spire on top of One World Trade Center on Friday, a capstone to an emotional 12-year effort to replace the twin towers destroyed by terrorists.

See more photos and read the complete story.

(Photo: Chris Pedota / AFP - Getty Images) (Photo: Mark Lennihan / AP)

Honoring those lost on September 11, 2001

(Photo: Chris Pedota / AFP - Getty Images; Mark Lennihan / AP)

From NBC News and wire services - Thousands gather Tuesday in New York, suburban Washington and rural Pennsylvania to mark the 11th anniversary of the Sept. 11 attacks, but at the somber day’s biggest venue, Ground Zero in lower Manhattan, this year’s observance will be missing a key feature from years past: politicians’ voices.

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The National September 11 Memorial at dusk

(Photo: John Makely / NBC News)

By John Makely / NBC News - As night falls, the National September 11 Memorial takes on a whole different feeling. Crowds become sparse, construction ceases and the traffic of lower Manhattan seems to fade away. You are left with the sounds of cascading water and the rustling of trees.  There is no better place to reflect on what happened on September 11, 2001, and the lives that were lost.

See more photos in the Photoblog.

9/11 memorial to cost $60 million a year to operate

(Photo: Mark Lennihan  /  AP)

With its huge reflecting pools, ringed by waterfalls and skyscrapers, and a cavernous underground museum still under construction, the National Sept. 11 Memorial and Museum at the World Trade Center is an awesome spectacle that moved and inspired some 4.5 million visitors in its first year.

But all that eye-welling magnificence comes with a jaw-dropping price tag.

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The sun rising in the background of the World Trade Center memorial.

Birds eye view of World Trade Center memorial

Sunset at Ground Zero