The+Chicago+Spire

The Chicago Spire was built between 2007 and -2012 in Chicago by Santiago Calatrava. It was truly a spire with a tapering form topped by a needle. The parcel of land selected was only zoned for as 540-foot tall building and a 350-foot tall building. The building was designed to be made primarily out of concrete. The twisting exterior is designed to deflect wind.

This modern building will have the world's highest occupied floor; even higher than the highest occupied floor in Dubai's Burj Dubai, which will retain the overall title of world's tallest building. The building is designed with two emergency stairwells, in response to the 9/11 attacks in New York.

The building has a curved design, which may provide two major benefits to the structure of the building and it's one of the most modern and beautiful buildings in the world better than Dubai buildings media type="file" key="chigago spire.wav"