South Korea's planned 1,125-foot skyscraper is designed to use "25% less steel without sacrificing strength," to help minimize waste during construction. The tower, designed with sustainability in mind, uses sun shades that reduce glare or maximize daylight, depending on the season. The triangular shape of the building is accomplished by rotating the building 45 degrees at about one third of the way up the tower and then rotating it again at about two thirds of the way.

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