The Russian had won all major titles since the 2004 Athens Olympic Games, but she has been out of form so far this season and failed to clear her final height of 4.80 meters.

CNN: Legend Bekele powers to fourth world title

The tower's builders say it will surpass Chicago's Willis Tower as the tallest building in the United States, with a final height of 1, 776 feet -- a nod to the year of the Declaration of Independence.

CNN: Obama signs beam of One World Trade Center

After the city was re-conquered in the 13th Century, the mosque was converted into the Catedral de Sevilla, and its connecting tower reached its final 104m height in the 16th Century.

BBC: Seville's threatened architectural heritage

Friday's final installation, raising the building's height to 1, 776 feet, makes One World Trade Center the tallest skyscraper in the U.S. and third-tallest in the world, although building experts dispute whether the spire is actually an antenna a crucial distinction in measuring the building's height.

WSJ: Spire permanently installed on WTC tower

The two pieces form a stainless steel beacon weighing almost 6 tons and will be the final piece put in place to give the building an iconic height of 1, 776 feet, a statement from the Port Authority said.

CNN: Final pieces hoisted atop 1 World Trade Center

But at the height of the market in the summer of 2006, they made a final decision to go rental, foreseeing that the city was about to be flooded with thousands of new condo units, according to Susi Yu, a senior vice president with the developer.

WSJ: Views From the Market Top