Dezeen Wire: the final steel beam has been put in place at Four World Trade Center, the first rebuilt tower on the site of the September 11 attacks in New York City. The 298-metre, 72-storey tower was designed by Japanese architect Fumihiko Maki and has been under construction since 2008.
Ground Zero is also home to two fountains sunk into the site of the former Twin Towers, designed by architect Michael Arad and landscape architect Peter Walker. Watch an animation of the the fountains here.
The unfinished Freedom Tower nearby is already the tallest building in the city, set to reach 1,776 feet on completion.
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