What would a stack of 272 billion dollars look like?

crunchweb.net — Describing a pile of 272 billion dollars, the current cost of war in Iraq, would read something like this: "This pile is 250 feet long, and 125 feet wide. It's 320 feet high at the tallest point, which is as tall as St. Steven's Tower, the clock tower that houses Big Ben at Parliament, in London, England."