Which was history's emptiest football ground?

During a match, of course. And the winner is the Oscar goes to:

West Ham Stadium. Thames Association FC still hold the record for the lowest attendance in Football League history when 469 went through the turnstiles, to watch Thames take on Luton in December 1930. It's claimed that the ground could hold 120,000 spectators (although estimates do vary), which leaves 119,531 tickets unsold.

The top ten is here. And in case you're into this kind of thing, here's much, much more of it.