The Burj Dubai tower officially opened yesterday, six years after construction began on the $4.1 billion, half-mile-high skyscraper. Conceived as a monument to the Arab city-state's economic ambitions, the Burj today looks more like a modern-day Tower of Babel. Dubai has been wracked by a debt crisis, and the building stands mostly empty and unwanted by the international tenants for whom it was supposedly built.

But then, the main argument for these monuments has never been purely economic. In early...