Meet Kingdom Tower in Saudi Arabia, which I imagine will be the setting of many a Roland Emmerich film in the future.
Originally planned to be a mile high, now it's just over one kilometer high. Judging by its pointiest of points, it will serve a secondary purpose of impaling alien spaceships.
Look, its first prey is built into the design!
You can read more about the building here, if you're less interested in alien threats and more interested in mundane details like "architects" or "square meters".