It's the motorway bridges; they get you every time. There's a large dent in a bridge in the M5 northbound between bristol and gloucester; I think a power station turbine got wedged in there or something.

At CERN they tend to build the experiments on site, either down the pit (e.g Alpha) or above ground, where the logistics of putting the thing together is easier. But then you have to get something down a 200' foot pit, which is done by booking the biggest crane in europe for a week when the wind is expected to be low, but the heat also low enough that metal doesnt expand; lift the roof off the building, pick up the experiment, put it down the hole -again, with cm to spare. Maybe the limitations of ground infrastructure are the big limit on what physicists can build...

Thank you Geir for cheering up my wet friday.
That thing looks like flash gordon's spacship...
http://marshallbrain.com/gif/flash-gordon.jpg