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The World's Largest Clock is going to be so huge, Saudi Arabia hopes to move the Greenwich Mean Time to Mecca. That's saying a lot, considering that Greenwich has been the international timekeeper since 1884. Yet change is always good, so perhaps the Prime Meridian may benefit from a new location.

Resembling Big Ben, "if Ben was on steroids," as the Foreign Policy blog notes, the World's Largest Clock spans 46 meters in diameter on a skyscraper 380 meters high. This means that it will be visible 17 kilometers away during the evening. Pretty impressive, no?