World's Most Expensive Single Objects

Note that the list is sorted by absolute dollars, not taking inflation into account; the Alaska Pipeline, costing $8B in 1977 would be roughly $28B in 2009 dollars (subject to the entirely unsupported assumption that construction costs rise in parallel with CPI), which would put it into second place after the ISS instead of 6th place.

Or, put another way: the Alaska Pipeline is, corrected for inflation, the most expensive object on earth. :-)

I'm somewhat surprised to see that San Francisco's New Bay Bridge is going to cost more than the LHC.

Interesting that the Big Dig cost twice as much as the Channel Tunnel.