One World Trade Center, the tallest skyscraper in the Western Hemisphere at 1,776 feet, is opening a new observatory to the public on 29 May.

Dubbed the Freedom Tower, the skyscraper is the main building of the new World Trade Center complex in Lower Manhattan, New York City. The 104-story super tall structure shares a numeric name with the northern Twin Tower of the original World Trade Center, which was destroyed in the terrorist attacks of 11 September 2001.

Having 3 million rentable square feet of space and a 55-foot high office lobby, the building is equipped with 54 high-speed destination dispatch passenger elevators.

The One World Observatory is an enclosed observation deck rising 1,250 feet above street level.

In recognition of the opening of One World Observatory, web cam services provider EarthCam has released a special edition of its One World Trade Center video. The commemorative time-lapse movie shows the completion of construction from October 2004 to Memorial Day 2015.

Hundreds of thousands of high definition images were captured over the past 11 years and hand-edited for this exclusive time-lapse movie.