Today on GUARDIAN life&style is this teaser:
There's many a garden outbuilding crying out for a makeover.
I'm wondering if this sentence is correct. I think there either should many be deleted (i.e. There is a garden outbuilding) or is should be are, the a should be dropped and an s should be added to verb outbuilding (i.e. There are many garden outbuildings).
Or does the sentence make sense in any way I don't recognize?