Jerusalem, Israel
No archeological remnant of Solomons Temple survives. The Bible provides descriptions, and since it is generally believed that the architectural style was constrained by regional influences, the biblical account is augmented by knowledge of contemporary buildings in the region. It is very possible that it was the most expensive structure ever built, because the gold alone, valued at 2001 prices, was worth something in the order of U.S.$62 billion. Cost aside, the temple is an architectural achievement because during the seven-year course of its construction no sound of hammer, axe, or any other tool [was heard] at the building site.