Turkey's President Recep Tayyip Erdogan should go down in history as "the Builder" -- though that won't necessarily be a compliment.
Erdogan loves construction projects -- from a planned airport that would be the biggest in Europe, to a shipping canal to rival Panama's. This building frenzy has helped Turkey's economy, but it also got Erdogan in trouble last year, triggering riots. Now he has completed a presidential palace that is four times as big as Louis XIV's Palace of Versailles, at a cost of $615 million. It displaces the Sultan of Brunei's residence as the biggest in the world.